|
Cross, GD and Slade, B. Advances In
T-Lymphocyte Immunophenotyping and Absolute CD4 T-Cell
Count Determinations. 16th Annual Clinical Applications
of Cytometry . 11-11-2001.
Kahn, M., Slade, B., Schalla, W. O., Lipman,
H, and Fehd, R. J. Retrospective Analysis of the HIV-1
RNA Test (Viral Load) Using the Model Performance
Evaluation Program Data from 1998-2000. 2001 National
HIV Prevention Conference . 8-12-2001.
Cross, GD and Schalla, W. O. Advances in
T-Lymphocyte Immunophenotyping and Absolute CD4 T-cell
count Determinations. Association of Public Health
Laboratories Conference on Laboratory Aspects of Human
Retrovirus and Hepatitis C Testing. 2000.
Cross, GD, Schalla, W. O., Taylor, R. N., and
Handsfield, JH. Evaluation of Laboratory Performance of
T-Lymphocyte Immunophenotyping (TLI) in support of HIV-1
Infected Patient Care and Management. Clinical
Applications of Cytometry, 9th Annual Meeting . 1994.
Blumer, S. O., Schalla, W. O., and Fehd, R. J.
Performance of Laboratories Using Rapid and/or
Simplified Methodology to Test for HIV-1 Antibody in Six
CDC Model Performance Evaluation Program Surveys. 11th
Annual Conference On Human Retrovirus Testing (ASTPHLD)
. 1996.
Blumer, S. O., Schalla, W. O., and Fehd, R. J.
Intra-Shipment Reproducibility of HIV-1 Western Blot
(WB) Results Reported in Ten Shipment Periods by
Laboratories Participating in the Centers for Disease
Control (CDC) Model Performance Evaluation Program (MPEP).
Third National Conference on Human Retrovirus and
Related Infections . 1997.
Blumer, S. O., Schalla, W. O., and Fehd, R. J.
Inter-Shipment Reproducibility of HIV-1 Testing Results
Reported by Laboratories Participating in the Centers
for Disease Control (CDC) Model Performance Evaluation
Program (MPEP). 12th Annual Conference on Human
Retrovirus Testing . 1997.
Williams, L, Blumer, S. O., Schalla, W. O.,
Robinson, P. H., Handsfield, JH, Fehd, R. J., Hancock,
J., Lipman, HB, and Hearn, T. L. Laboratory Performance
in Human T-Lymphotropic Virus Types I/II (HTLV-I/II)
Analyses. 97th Annual Meeting of the American Society
for Microbiology . 1997.
Schalla, W. O. Analysis of Results Reported By
Laboratories Participating in the CDC Model Performance
Evaluation Program for HIV-1 RNA Determinations.
Consortium for Retrovirus Serology Standardization
Annual Meeting . 1997.
Blumer, S. O., Schalla, W. O., Hearn, T. L, and
Fehd, R. J. Analysis of p24 Antigen Testing Results
Reported to the CDC Model Performance Evaluation Program
By Laboratories Participating in the June 1997 Survey.
13th Annual Conference on Human Retrovirus Testing .
1997.
Schalla, W. O., Blumer, S. O., Hearn, T. L, and
Fehd, R. J. Analysis of Results Reported By Laboratories
Participating in the CDC Model Performance Evaluation
Program for HIV-1 RNA Determinations. 13th Annual
Conference on Human Retrovirus Testing . 1997.
Blumer, S. O., Schalla, W. O., Hearn, T. L, and
Fehd, R. J. Evaluation of Laboratory Performance in
Determining HIV-1 RNA Levels Present in CDC Performance
Evaluation Samples. 12th World AIDS Conference . 1998.
Schalla, W. O. Algorithm for HIV-1 Antibody Testing:
Data from a Model Performance Evaluation Program. 9th
ASTPHLD Conference on Human Retrovirus Testing . 1994.
Blumer, S. O., Handsfield, JH, and Schalla, W. O.
Intershipment Reproducibility of HIV-1 Western Blot
Results Reported in Five Paired Shipment Periods by
Laboratories Participating in the Centers for Disease
Control and Prevention (CDC) Model Performance
Evaluation Program. 9th ASTPHLD Conference on Human
Retrovirus Testing . 1994.
Cross, GD, Schalla, W. O., Taylor, R. N., and
Handsfield, JH. Evaluation of Laboratory Performance of
T-Lymphocyte Immunophenotyping (TLI) In Support of HIV-1
Infected Patient Care and Management. 9th ASTPHLD
Conference on Human Retrovirus Testing . 1994.
Hearn, T. L, Schalla, W. O., and Collins, C. L. The
Centers for Disease Control and Prevention Model
Performance Evaluation Program for HIV-1 Antibody
Testing. WHO Consultation Meeting On The Coordination of
Quality Assessment Programmes For HIV Testing . 1995.
Blumer, S. O. and Schalla, W. O. Performance of
Laboratories Testing HIV-1 Seroconversion Samples in the
CDC Model Performance Evaluation Program August 1994
Survey Panels. 10th Annual Conference On Human
Retrovirus Testing (ASTPHLD) . 1995.
Cross, GD, Schalla, W. O., Taylor, R. N., Siragusa,
M. T., Cohn, R. D., Gaunt, E. E., and Holzworth, D. A.
Reliability of Absolute CD4 Counts Between Laboratories:
Results From A Pilot Study. Clinical Cytometry Tenth
Annual Meeting . 1995.
Schalla, W. O., Cross, GD, Taylor, R. N., Siragusa,
M. T., Cohn, R. D., Borowitz, M. J., Bray, R. A.,
Hurtubise, P. E., Jackson, A. L, Koepke, J. A., Landay,
A., Nicholson, J. K. A., Rickman, W. J., and Stelzer, G.
T. Determination of CD4+ Absolute Counts: Some Factors
Affecting Hematology Analyzer Results. 2nd National
Conference on CD4+ T-Lymphocyte Immunophenotyping .
1995.
Schalla, W. O. Centers for Disease Control and
Prevention (CDC) Model Performance Evaluation Program (MPEP):
Enzyme Immunoassay and Western Blot Testing Errors. 11th
Annual Conference On Human Retrovirus Testing (ASTPHLD)
. 1996.
Cross, GD, Schalla, W. O., Hancock, J., and Hearn,
T. L. Evaluation of Laboratory Performance of
T-Lymphocyte Immunophenotyping in Support of Early HIV-1
Intervention and Prevention. 5th National Forum on AIDS
. 1992.
Collins, C. L., Cross, GD, Schalla, W. O., Hancock,
J., and Hearn, T. L. Evaluation of Laboratory
Performance of T-Lymphocyte Immunophenotyping in Support
of Early HIV-1 Intervention and Prevention. VIII
International Conference on AIDS . 1992.
Schalla, W. O., Cross, GD, Blumer, S. O., Hearn, T.
L, and Collins, C. L. T-Lymphocyte Immunophenotyping (TLI):
Characteristics of Laboratories Enrolled in the CDC
Model Performance Evaluation Program. 8th ASTPHLD
Conference on Human Retrovirus Testing . 1993.
Blumer, S. O., Schalla, W. O., Handsfield, JH,
Hancock, J., Cross, GD, and Hearn, T. L. Serologic
Testing for HIV-1: Western Blot (WB) Testing and
Inconsistent Interpretation of WB Results in a Model
Performance Evaluation Program (MPEP). 8th ASTPHLD
Conference on Human Retrovirus Testing . 1993.
Cross, GD, Schalla, W. O., Handsfield, JH, Blumer,
S. O., and Hearn, T. L. Performance Evaluation of
Laboratories Conducting T-Lymphocyte Immunophenotyping
in Support of Early HIV-1 Intervention and Management of
HIV-1-Infected Patients. 8th ASTPHLD Conference on Human
Retrovirus Testing . 1993.
Blumer, S. O., Schalla, W. O., Handsfield, JH,
Hancock, J., Cross, GD, and Hearn, T. L. Serologic
Testing for HIV-1: Status of Western Blot (WB) Testing
and Inconsistent Interpretation of WB Testing Results in
a Model Performance Evaluation Program (MPEP) -
1989-1992. IX International Conference on AIDS . 1993.
Schalla, W. O., Cross, GD, Blumer, S. O., Hearn, T.
L, and Collins, C. L. HIV/AIDS: Characteristics of
Laboratories Enrolled in a T-Lymphocyte
Immunophenotyping (TLI) Model Performance Evaluation
Program (MPEP) and Their Testing Practices. IX
International Conference on AIDS . 1993.
Cross, GD, Schalla, W. O., Handsfield, JH, Blumer,
S. O., Hearn, T. L, and Collins, C. L. Evaluation of
Laboratory Performance of T-Lymphocyte Immunophenotyping
(TLI) in Support of Early HIV-1 Intervention and
Management of HIV-1-Infected Patients. IX International
Conference on AIDS . 1993.
Schalla, W. O. Performance Evaluation and
Proficiency Testing: Model Performance Evaluation
Program. National Conference on T-Lymphocyte
Immunophenotyping . 1993.
Blumer, S. O. Serologic Testing for HIV-1: Western
Blot (WB) Testing and Inconsistent Interpretation of WB
Results in a Model Performance Evaluation Program.
Consortium for Retrovirus Serology Standardization .
1993.
Schalla, W. O. Objectives of the MPEP and Recent
Data from the TLI Survey Questionnaire and Specimen
Testing Results. Clinical Applications of Cytometry
Annual Meeting . 1993.
Handsfield, JH, Schalla, W. O., Blumer, S. O., and
Hearn, T. L. Testing for HIV-1 Antibody (Ab):
Discrepancies in Western Blot (WB) Interpretations
Reported in a Model Performance Evaluation Program (MPEP).
American Public Health Association 121st Annual Meeting
. 1993.
Blumer, S. O., Schalla, W. O., Handsfield, JH,
Hancock, J., and Hearn, T. L. HIV-1 Western Blot (WB)
Testing: Errors in Interpretation of WB Testing Results
in a Model Performance Evaluation Program (MPEP). First
National Conference on Human Retroviruses and Related
Infections . 1993.
Cross, GD, Schalla, W. O., Taylor, R. N., Handsfield,
JH, Hearn, T. L, and Collins, C. L. Evaluation of
Laboratory Performance of T-Lymphocyte Immunophenotyping
(TLI) in Support of HIV-1 Infected Patient Intervention
and Management. First National Conference on Human
Retroviruses and Related Infections . 1993.
Schalla, W. O., Cross, GD, Taylor, R. N., Hall-Dean,
J., Hearn, T. L, and Collins, C. L. Testing Trends in
the T-Lymphocyte Immunophenotyping (TLI) Laboratory:
Data from a National Performance Evaluation (PE)
Program. First National Conference on Human Retroviruses
and Related Infections . 1993.
Blumer, S. O., Schalla, W. O., Cross, GD, Hancock,
J., Muir, H. W., and Hearn, T. L. Analysis of
Indeterminate Human T-lymphotropic Virus Type I (HTLV-I)
Western Blot Interpretations Reported for HTLV-Type II
Infected Individuals. VII International Conference on
AIDS . 1991.
Schalla, W. O. Performance Evaluation for CD4+ Cell
Testing. Centers for Disease Control and Prevention AIDS
Update . 1991.
Cross, GD, Schalla, W. O., Hancock, J., and Hearn,
T. L. Evaluation of Laboratory Performance of
T-Lymphocyte Immunophenotyping in Support of Early HIV-1
Intervention and Prevention. 7th ASTPHLD Conference on
Human Retrovirus Testing . 1992.
Blumer, S. O., Schalla, W. O., Cross, GD, Gerber, A.
R., Hancock, J., and Hearn, T. L. Evaluation of the
Performance of Laboratories that Test for Human T-lymphotropic
Virus Antibodies. 6th ASTPHLD Consensus Conference .
1991.
Cross, GD, Schalla, W. O., Blumer, S. O., Hancock,
J., Gerber, A. R., and Hearn, T. L. Inter-shipment
Reproducibility of Laboratories Participating in a
Performance Evaluation Program. 6th ASTPHLD Consensus
Conference . 1991.
Blumer, S. O., Schalla, W. O., Cross, GD, Hearn, T.
L, Howerton, D. A., and Valdiserri, R. O. Assessment of
Human T-lymphotropic Virus Types I and II Antibody
Testing. American Society for Microbiology Meeting .
1991.
Cross, GD, Schalla, W. O., Blumer, S. O., Hearn, T.
L, and Valdiserri, R. O. Human Immunodeficiency Virus
Type 1 (HIV-1) Antibody Testing: Analytic Sensitivity
and Analytic Specificity of Enzyme Immunoassay (EIA)
Results. American Society for Microbiology Meeting .
1991.
Schalla, W. O., Cross, GD, Blumer, S. O., Hancock,
J., Gerber, A. R., Muir, H. W., and Hearn, T. L. Update
on Western Blot Testing: Performance Evaluation of
Laboratories that Test for Human Immunodeficiency Virus
Type 1 (HIV-1) Antibodies. VII International Conference
on AIDS . 1991.
Cross, GD, Schalla, W. O., Blumer, S. O., Taylor, R.
N., Gerber, A. R., Hearn, T. L, and Valdiserri, R. O.
Analytic Sensitivity and Specificity of Enzyme
Immunoassay Results in Testing for Human
Immunodeficiency Virus Type 1 (HIV-1) Antibody. VII
International Conference on AIDS . 1991.
Schalla, W. O., Hearn, T. L, Taylor, R. N., Griffin,
C. W., Muir, H. W., and Wood, R. J. Centers for Disease
Control Model Performance Evaluation Program: Results of
the Western Blot and Indirect Immunofluorescence Tests
for HIV-1 Antibodies. V International Conference on AIDS
. 1989.
Hearn, T. L, Schalla, W. O., Taylor, R. N., Muir, H.
W., Griffin, C. W., and Wood, R. J. Evaluation of
Laboratory Performance of Enzyme Immunoassay Tests for
HIV-1 Antibody. V International Conference on AIDS .
1989.
Schalla, W. O. Centers for Disease Control: Model
Performance Evaluation Program for HIV-1 Testing. Second
Annual Meeting of AIDS Laboratory Directors . 1989.
Blumer, S. O. Overview of Results from CDC's First
Performance Evaluation Survey for HTLV-I/II Antibody
Testing. Sixth Consortium for Retrovirus Serology
Standardization . 1990.
Schalla, W. O., Hearn, T. L, Cross, GD, Blumer, S.
O., Taylor, R. N., and Valdiserri, R. O. Human
Immunodeficiency Virus Type-1 (HIV-1) Antibody Testing:
Accuracy of Western Blot Results. Sixth International
AIDS Conference . 1990.
Cross, GD, Schalla, W. O., Hearn, T. L, Blumer, S.
O., Taylor, R. N., and Valdiserri, R. O. Analytic
Sensitivity and Specificity of Enzyme Immunoassay
Results in Testing for Human Immunodeficiency Virus Type
1 (HIV-1) Antibody. Sixth International AIDS Conference
. 1990.
Blumer, S. O., Hearn, T. L, Schalla, W. O., Cross,
GD, and Valdiserri, R. O. Assessment of Human T-Cell
Lymphotrophic Virus Type I/II Antibody Testing. Sixth
International AIDS Conference . 1990.
Blumer, S. O. Observations on Western Blot Results
and Interpretations Reported in Testing HIV-1
Performance Evaluation Samples. Fifth Consortium for
Retrovirus Serology Standardization . 1989.
Taylor, R. N. HIV Testing Quality Indicators:
Information from CDC's Model Performance Evaluation
Program. CDC/TLPO Training Course on HIV-1 Tests . 1989.
Taylor, R. N., Hearn, T. L, Griffin, C. W., Schalla,
W. O., and Muir, H. W. Results of CDC's Model
Performance Evaluation Program for HIV-1 Antibody
Testing. V International Conference on AIDS . 1989.
Blumer, S. O., Schalla, W. O., Hearn, T. L, and
Fehd, R. J. Analysis of p24 Antigen Testing Results
Reported to the CDC Model Performance Evaluation Program
by Laboratories Participating in the June 1997 and March
1998 Surveys. CDC Conference on the Laboratory Science
of HIV . 1998.
Blumer, S. O., Schalla, W. O., Hearn, T. L, and
Fehd, R. J. Evaluation of Laboratory Performance in
Determining HIV-1 RNA Levels Present in CDC Performance
Evaluation Samples. CDC Conference on the Laboratory
Science of HIV . 1998.
Cross, GD, Handsfield, JH, and Schalla, W. O.
Comparison of Absolute CD4 T-Cell Counts, Multi-Platform
vs. Single Platform Methods: Results from a Performance
Evaluation Program. Clinical Applications of Cytometry,
13th Annual Meeting . 1998.
Cross, GD, Handsfield, JH, and Schalla, W. O.
Comparison of Absolute CD4 and CD8 T-Cell Results
Measured by Multi-Platform and Single Platform Methods.
CDC Conference on the Laboratory Science of HIV . 1998.
Blumer, S. O., Schalla, W. O., Hearn, T. L, and
Fehd, RJ. Evaluation of Laboratory Performance in
Determining HIV-1 RNA Levels Present in CDC Performance
Evaluation Samples. 12th World AIDS Conference . 1999.
2000.
Cross, GD, Handsfield, JH, and Schalla, W. O. CD4
T-Cell Enumeration: Single-Platform Methods May Yield
More Reproducible Results Than Multi-Platform Methods.
14th Annual Meeting of the Clinical Applications of
Cytometry . 1999.
Cross, GD and Schalla, W. O. Advances in
T-lymphocyte Immunophenotyping and Absolute CD4 T-Cell
Count Determination. National HIV Prevention Conference
. 1999.
Hearn, T. L, Schalla, W. O., Blumer, S. O.,
Handsfield, JH, Fehd, R. J., Hancock, J., and Simon, M.
K. Western Blot Testing: Laboratory Performance. FDA's
Blood Products Advisory Committee . 2000.
Schalla, W. O. Update: Viral Load Testing In The
United States. Consortium for Retrovirus Serology
Standardization. 2000.
Schalla, W. O., Blumer, S. O., and Hearn, T. L.
HIV-1 RNA Testing In The United States: Observations
From A Performance Evaluation Program. Conference on
Laboratory Aspects of Human Retrovirus and Hepatitis C
Testing sponsored by the Association of Public Health
Laboratories (APHL) . 2000.
Schalla, W. O. and Hearn, T. L. Implementation of a
Viral Load Performance Evaluation Program and A Current
Overview of the Model Performance Evaluation Program.
HIV/AIDS Update, NCHSTP . 2000.
Schalla, W. O. and Hearn, T. L. Laboratory Issues
Related to Viral Load Testing. Meeting for
Standardization of Viral Load Reporting (Representatives
from CDC, FDA, NIH, CAP, SDSU, AABB, APHL). 1999.
Stankovic, A, Schalla, W. O., Blumer, S. O., and
Handsfield, JH. CDC's Model Performance Evaluation
Program (MPEP): Analysis of Human Immunodeficiency Virus
Antibody (HIV-1 Ab) Results. 52nd Annual Meeting of the
American Association of Blood Banks . 1999.
Stankovic, A, Rosner, E, Handsfield, JH, Cross, GD,
and Schalla, W. O. Impact of CDC's Model Performance
Evaluation Program (MPEP) for T-Lympocyte
Immunophenotyping (TLI) on Laboratory Practices. 14th
Annual Meeting of the Clinical Applications of Cytometry
. 1999.
Schalla, W. O., Blumer, S. O., and Hearn, T. L.
HIV-1 RNA Testing In the United States: Observations
from a Performance Evaluation Program. 1999 Conference
on HIV Prevention . 1999.
Stankovic, A, Astles, JR, Schalla, W. O., Ridderhof,
J. C., and Hearn, T. L. Model Performance Evaluation
Program (MPEP). Academy for Clinical Laboratory
Scientists and Physicians . 1999.
Schalla, W. O., Blumer, S. O., and Hearn, T. L.
HIV-1 RNA Testing In the United States: Observations
from a Performance Evaluation Program. 14th Annual
Conference on Human Retrovirus Testing . 1999.
Regulatory Mechanisms for Assuring
the Quality of HIV Testing. R.N Taylor. [Round table
presentation February 1988 at the First Pan American
Conference on AIDS in Guadalajara, Mexico]
CDC's Model Performance Evaluation Program for HIV Testing. C.W.
Griffin. [Presented March 9, 1988 at ASTPHLD'S Third Consensus Conference on HIV Testing
in Kansas City, Missouri]
Use of HIV Reference Sera in Mailed Performance Evaluation Surveys in
the United States. T.L. Hearn, R.N. Taylor, C.W. Griffin, M.A. Robinson, R.J. Wood, H.W.
Muir, and G. Elwell. [Presented June 1988 at the IV International Conference on AIDS in
Stockholm, Sweden]
Testing for HIV Infection in the United States: Evaluating Laboratory
Performance. R.N. Taylor, C.W. Griffin, T.L. Hearn, M.A. Robinson, R.J. Wood, H.W. Muir,
and G. Elwell. [Presented June 1988 at the IV International Conference on AIDS in
Stockholm, Sweden]
CDC Model Performance Evaluation Program for HIV Testing. C.W. Griffin.
[Presented June 8, 1988, at the 31st Annual Planning Conference, ASTPHLD, Nashville, TN]
CDC Laboratory Assessment Program. C.W. Griffin. [Presented June 10,
1988 at the Plasma Forum '88, American Blood Resources Association, Arlington, VA]
Quality Assurance. D.J. Boone. [Presented August 9-11, 1988 at the
Canadian Federal Center on AIDS and PAHO "Workshop on HIV Serology" in Ottawa,
Canada]
Components of the Performance Evaluation Program and Their Development.
C.W. Griffin. [Presented August 18, 1988 at the CDC AIDS Rounds, "HIV Antibody
Testing: Laboratory Performance Evaluation Update"]
Latest Analysis of Data from the February 29 Pilot Shipment. R.N.
Taylor. [Presented August 18, 1988 at the CDC AIDS Rounds, "HIV Antibody Testing:
Laboratory Performance Evaluation Update"]
Participant Responses to the Questionnaire Mailed to 1,400 Laboratories
in May 1988. W.O. Schalla. [Presented August 18, 1988 at the CDC AIDS Rounds, "HIV
Antibody Testing: Laboratory Performance Evaluation Update"]
Report on CDC Performance Evaluation Testing. R.N. Taylor. [Presented
September 9, 1988 at the Consortium for Retrovirus Serology Standardization meeting
entitled "An Update of HIV-1 and HTLV-I Serology" in Yountville, California.]
A Laboratory Quality Assurance Program to Improve HIV Antibody Testing.
K.M. Peddecord, A.S. Benenson, L.K. Hofherr, M.S. Ascher, and R.N. Taylor. [Presented
September 22-24, 1988 at the 1988 International Symposium on Medical Virology in San
Francisco, California]
Quality Assurance Program: Clinic-Based Surveys. T.L. Hearn. [Presented
on March 1, 1989 at CDC's HIV Seroprevalence Workshop for Laboratory Issues]
CDC Model Performance Evaluation Program Questionnaire and Sample Survey
Results. R.N. Taylor, T.L. Hearn, W.O. Schalla, E. Eavenson, and R.O. Valdiserri.
[Presented on March 7-9, 1989 at the Fourth Consensus Conference on Testing for Human
Retroviruses of the ASTPHLD in Kansas City, Missouri]
HIV Antibody Testing Reporting Practices, Evidence from a Blind
Proficiency Testing Study. Draft Criteria and Recommendations for Reporting HIV Antibody
Test Results. K.M. Peddecord, A.S. Beneson, L.K. Hofherr, M.S. Ascher, R.N. Taylor, K.L.
Ferran, and D.P. Francis. [Presented on March 7-9, 1989 at the Fourth Consensus Conference
on Testing for Human Retroviruses of the ASTPHLD in Kansas City, Missouri]
Evaluating and Improving External Monitoring and Surveillance Systems.
L.K. Hofherr, K.M. Peddecord, A.S. Beneson, M.S. Ascher, R.N. Taylor, and T.L. Hearn.
[Presented on April 10-12, 1989 at the Institute on Critical Issues in Minneapolis,
Minnesota]
Observations on Western Blot Results and Interpretations Reported in
Testing HIV-1 Performance Evaluation Samples. S.O. Blumer. [Presented April 11-13, 1989 at
the Fifth Consortium for Retrovirus Serology Standardization, Seattle, Washington]
CDC's Model Performance Evaluation Program (HIV-1) Testing - Program
Overview. H.W. Muir. [Presented in May 1989 at the Georgia Society for Medical Technology
meeting in Atlanta, GA]
HIV Testing Quality Indicators: Information from CDC's Model Performance
Evaluation Program. R.N. Taylor. [Presentation on May 11, 1989 for CDC/TLPO Training
Course on HIV-1 Tests]
Results of CDC's Model Performance Evaluation Program for HIV-1 Antibody
Testing. R.N. Taylor, T.L. Hearn, C.W. Griffin, W.O. Schalla, and H.W. Muir. [Presented
June 4-9, 1989 at the V International Conference on AIDS in Montreal, Canada]
Evaluation of Laboratory Performance of Enzyme Immunoassay Tests for
HIV-1 Antibody. T.L. Hearn, W.O. Schalla, R.N. Taylor, H.W. Muir, C.W. Griffin, and R.J.
Wood. [Presented June 4-9, 1989 at the V International Conference on AIDS in Montreal,
Quebec, Canada]
Centers for Disease Control Model Performance Evaluation Program:
Results of the Western Blot and Indirect Immunofluorescence Tests for HIV-1 Antibodies.
W.O. Schalla, T.L. Hearn, R.N. Taylor, C.W. Griffin, H.W. Muir, and R.J. Wood. [Presented
June 4-9, 1989 at the V International Conference on AIDS in Montreal, Quebec, Canada]
The Application of Health Care Technology in Practice - The Ideal Versus
the Standard of Practice (Reality): The Case of HIV Antibody Testing. K.M. Peddecord, A.S.
Beneson, and L.O. Hofherr. [Presented on June 5-6, 1989 at the International Society of
Technical Assessment of Health Care conference in London, England]
HIV Testing Quality Indicators: Information from CDC's Model Performance
Evaluation Program. A.R. Gerber. [Lecture presented on October 2-6, 1989 as part of CDC
Course #9485-C "Assays for HIV Antibodies and Antigens: Present and Future"
Atlanta, Georgia]
HIV Testing Quality Indicators: Information from CDC's Model Performance
Evaluation Program. A.R. Gerber. [Presented on October 5, 1989 at CDC/TLPO Training Course
on HIV-1 Tests]
Assessment of the Usefulness of Laboratory Tests in Primary Health Care
of Developing Countries. T.L. Hearn, R.O. Valdiserri, and J.D.K. Essien. [Presented on
October 23-27, 1989 at the Meeting on Development of Appropriate Laboratory Technology to
Support Primary Health Care, Geneva, Switzerland]
Centers for Disease Control: Model Performance Evaluation Program for
HIV-1 Testing. W.O. Schalla. [Presented on November 16-19, 1989 at the Second Annual
Meeting of AIDS Laboratory Directors, Santo Domingo, Dominican Republic]
The CDC Model Performance Evaluation Program. W.O. Schalla. [Presented
February 5, 1990 to the National Conference of State Legislators, Atlanta, Georgia]
Overview of Results from CDC's First Performance Evaluation Survey for
HTLV-I/II Antibody Testing. S.O. Blumer. [Presented on February 9, 1990 at the Sixth
Consortium for Retrovirus Serology Standardization in Sacramento, California]
Quality Assurance in State Public Health Laboratories - Report of the
CDC Survey. R.O. Valdiserri. [Presented on March 6-8, 1990 at the Fifth Consensus
Conference on Testing for Human Retroviruses, Kansas City, Missouri]
Demonstration of the Laboratory Performance Information Exchange System.
R.N. Taylor, W.O. Schalla, T.L. Hearn, H.W. Muir, and R.O. Valdiserri. [Demonstrated on
March 6-8, 1990 at the Fifth Consensus Conference on Testing for Human Retroviruses,
Kansas City, Missouri]
Accuracy of Western Blot Testing for Human Immunodeficiency Virus Type 1
(HIV-1) Infection. W.O. Schalla, G.D. Cross, T.L. Hearn, S.O. Blumer, R.N. Taylor, and
R.O. Valdiserri. [Presented on May 13-17, 1990 at the 1990 American Society for
Microbiology Annual Meeting in Anaheim, California]
HIV-1 Antibody Testing Practices in the Nation's Laboratories. T.L.
Hearn. [Presented May 17, 1990 at CDC AIDS Rounds, Atlanta, Georgia]
Laboratory Performance Variables for HIV-1 Antibody Testing. A.R.
Gerber. [Presented May 17, 1990 at CDC AIDS Rounds, Atlanta, Georgia]
Human Immunodeficiency Virus Type-1 (HIV-1) Antibody Testing: Accuracy
of Western Blot Results. W.O. Schalla, T.L. Hearn, G.D. Cross, S.O. Blumer, R.N. Taylor,
and R.O. Valdiserri. [Presented on June 20-24, 1990 at the Sixth International AIDS
Conference at San Francisco, California]
Analytic Sensitivity and Specificity of Enzyme Immunoassay Results in
Testing for Human Immunodeficiency Virus Type 1 (HIV-1) Antibody. G.D. Cross, W.O.
Schalla, T.L. Hearn, S.O. Blumer, R.N. Taylor and R.O. Valdiserri. [Presented on June
20-24, 1990 at the Sixth International AIDS Conference at San Francisco, California]
Assessment of Human T-Cell Lymphotrophic Virus Type I/II Antibody
Testing. S.O. Blumer, T.L. Hearn, W.O. Schalla, G.D. Cross, and R.O. Valdiserri.
[Presented on June 20-24, 1990 at the Sixth International AIDS Conference at San
Francisco, California]
National Capacity for Providing T-Lymphocyte Immunophenotyping in
Support of Early HIV-1 Intervention. R.O. Valdiserri, G.D. Cross, A.R. Gerber, T.L. Hearn,
and R.E. Schwartz. [Presented on June 20-24, 1990 at the Sixth International AIDS
Conference at San Francisco, California]
Association of Performance on EIA for HIV-1 Antibody with Laboratory
Characteristics and Testing Practices. A.R. Gerber, C.A. Johnson, R.E. Schwartz, T.L.
Hearn, and R.O. Valdiserri. [Presented on June 20-24, 1990 at the Sixth International AIDS
Conference at San Francisco, California]
Demonstration of the Laboratory Performance Information Exchange System.
R.N. Taylor, T.L. Hearn, H.W. Muir, W.O. Schalla, and R.O. Valdiserri. [Demonstrated on
June 20-24, 1990 at Sixth International AIDS Conference at San Francisco, California]
Evaluation of the Performance of Laboratories that Test for Human
T-lymphotropic Virus Antibodies. S.O. Blumer, W.O. Schalla, G.D. Cross, A.R. Gerber, J.S.
Hancock, and T.L. Hearn. [Presented on March 4-7, 1991 at the 6th ASTPHLD Consensus
Conference in Kansas City, Missouri]
Evaluation of Laboratory Performance of T-Lymphocyte Immunophenotyping
in Support of Early HIV-1 Intervention and Prevention. A.R. Gerber, G.D. Cross, W.O.
Schalla, J.S. Hancock, S.O. Blumer, and T.L. Hearn. [Presented on March 4-7, 1991 at the
6th ASTPHLD Consensus Conference in Kansas City, Missouri]
Inter-shipment Reproducibility of Laboratories Participating in a
Performance Evaluation Program. G.D. Cross, W.O. Schalla, S.O. Blumer, J.S. Hancock, A.R.
Gerber, and T.L. Hearn. [Presented on March 4-7, 1991 at the 6th ASTPHLD Consensus
Conference in Kansas City, Missouri]
What Do Human T-lymphocyte Immunophenotyping Reports Contain? Results of
a Case-Series. K.M. Peddecord, A.S. Benenson, D.P. Francis, D.J. Hewitt, R.S. Garfein,
L.K. Hofherr, A.R. Gerber, G.D. Cross, and W.O. Schalla. [Presented in March 4-7, 1991 at
the 6th ASTPHLD Consensus Conference in Kansas City, Missouri]
Assessment of Human T-lymphotropic Virus Types I and II Antibody
Testing. S.O. Blumer, W.O. Schalla, G.D. Cross, T.L. Hearn, D.A. Howerton, and R.O.
Valdiserri. [Presented in May 1991 at the American Society for Microbiology Meeting in
Dallas, Texas]
Human Immunodeficiency Virus Type 1 (HIV-1) Antibody Testing: Analytic
Sensitivity and Analytic Specificity of Enzyme Immunoassay (EIA) Results. G.D. Cross, W.O.
Schalla, S.O. Blumer, T.L. Hearn, and R.O. Valdiserri. [Presented in May 1991 at the
American Society for Microbiology Meeting in Dallas, Texas]
Update on Western Blot Testing: Performance Evaluation of Laboratories
that Test for Human Immunodeficiency Virus Type 1 (HIV-1) Antibodies. W.O. Schalla, G.D.
Cross, S.O. Blumer, J.S. Hancock, A.R. Gerber, H.W. Muir, and T.L. Hearn. [Presented on
June 16-21, 1991 at the VII International Conference on AIDS in Florence, Italy]
Analytic Sensitivity and Specificity of Enzyme Immunoassay Results in
Testing for Human Immunodeficiency Virus Type 1 (HIV-1) Antibody. G.D. Cross, W.O.
Schalla, S.O. Blumer, R.N. Taylor, A.R. Gerber, T.L. Hearn, and R.O. Valdiserri.
[Presented on June 16-21, 1991 at the VII International Conference on AIDS in Florence,
Italy]
Correlation Between Laboratory Personnel Parameters and the Quality of
HIV-1 Antibody Testing in U.S. Laboratories. T.L. Hearn, R.O. Valdiserri, C.A. Johnson,
J.S. Hancock, R.E. Schwartz, and A.R. Gerber. [Presented on June 16-21, 1991 at the VII
International Conference on AIDS in Florence, Italy]
Analysis of Indeterminate Human T-lymphotropic Virus Type I (HTLV-I)
Western Blot Interpretations Reported for HTLV-Type II Infected Individuals. S.O. Blumer,
W.O. Schalla, G.D. Cross, J.S. Hancock, H.W. Muir, and T.L. Hearn. [Presented on June
16-21, 1991 at the VII International Conference on AIDS in Florence, Italy]
Evaluation of Laboratory Performance of T-Lymphocyte Immunophenotyping
in Support of Early HIV-1 Intervention and Prevention. A.R. Gerber, G.D. Cross, W.O.
Schalla, J.S. Hancock, H.W. Muir, T.L. Hearn, and R.O. Valdiserri. [Presented on June
16-21, 1991 at the VII International Conference on AIDS in Florence, Italy]
Analytic Specificities and Sensitivities of Indirect Immunofluorescence
Results in Testing for Human Immunodeficiency Virus Type 1 (HIV-1) Antibody for 1988 to
1990. R.N. Taylor, G.D. Cross, S.O. Blumer, A.R. Gerber, W.O. Schalla, and T.L. Hearn.
[Presented on June 16-21, 1991 at the VII International Conference on AIDS in Florence,
Italy]
Performance Evaluation for CD4+ Cell Testing. W.O. Schalla. [Presented
on October 11, 1991 at CDC AIDS Update]
Accuracy and Precision of T-Lymphocyte Immunophenotyping: Results of a
Blind Inter-laboratory Survey. K.M. Peddecord, R.S. Garfein, D.P. Francis, G.D. Cross,
W.O. Schalla, A.S. Benenson, and L.K. Hofherr. [Presented March, 1992 at the 7th ASTPHLD
Conference on Human Retrovirus Testing in Chicago, Illinois]
Shopping for a TLI Reference Laboratory - Criteria for Selecting the
Best. D.P. Francis, K.M. Peddecord, A.F. Back, R.S. Garfein, L.K. Hofherr, A.S. Benenson,
G.D. Cross, and R.N. Taylor. [Presented March, 1992 at the 7th ASTPHLD Conference on Human
Retrovirus Testing in Chicago, Illinois]
Testing for HTLV Antibody: Results of the Centers for Disease Control
HTLV Survey Questionnaire. S.O. Blumer, W.O. Schalla, J.S. Hancock, A.L. Glaude, and R.J.
Fehd. [Presented March, 1992 at the 7th ASTPHLD Conference on Human Retrovirus Testing in
Chicago, Illinois]
Evaluation of Laboratory Performance of T-Lymphocyte Immunophenotyping
in Support of Early HIV-1 Intervention and Prevention. G.D. Cross, W.O. Schalla, J.S.
Hancock, and T.L. Hearn. [Presented March, 1992 at the 7th ASTPHLD Conference on Human
Retrovirus Testing in Chicago, Illinois]
Accuracy and Precision of T-Lymphocyte Immunophenotyping: Results of a
Blind Inter-Laboratory Survey. K.M. Peddecord, R.S. Garfein, D.P. Francis, A.S. Benenson,
L.K. Hofherr, J.L. Cross, G.D. Cross, and W.O. Schalla. [Presented April, 1992 at the 5th
National Forum on AIDS in Atlanta, Georgia]
Evaluation of Laboratory Performance of T-Lymphocyte Immunophenotyping
in Support of Early HIV-1 Intervention and Prevention. G.D. Cross, W.O. Schalla, J.S.
Hancock, and T.L. Hearn. [Presented April, 1992 at the 5th National Forum on AIDS in
Atlanta, Georgia]
Evaluation of Laboratory Performance of T-Lymphocyte Immunophenotyping
in Support of Early HIV-1 Intervention and Prevention. C.L. Collins, G.D. Cross, W.O.
Schalla, J.S. Hancock, and T.L. Hearn. [Presented in June, 1992 at the VIII International
Conference on AIDS in Amsterdam, The Netherlands.]
T-Lymphocyte Immunophenotyping (TLI): Characteristics of Laboratories
Enrolled in the CDC Model Performance Evaluation Program. W.O. Schalla, G.D. Cross, S.O.
Blumer, T.L. Hearn, and C.L. Collins. [Presented March 3-5, 1993, at the 8th ASTPHLD
Conference on Human Retrovirus Testing in Atlanta, Georgia]
Serologic Testing for HIV-1: Western Blot (WB) Testing and Inconsistent
Interpretation of WB Results in a Model Performance Evaluation Program (MPEP). S.O.
Blumer, W.O. Schalla, J.H. Handsfield, J.S. Hancock, G.D. Cross, and T.L. Hearn.
[Presented March 3-5, 1993, at the 8th ASTPHLD Conference on Human Retrovirus Testing in
Atlanta, Georgia]
Performance Evaluation of Laboratories Conducting T-Lymphocyte
Immunophenotyping in Support of Early HIV-1 Intervention and Management of HIV-1-Infected
Patients. G.D. Cross, W.O. Schalla, J.H. Handsfield, S.O. Blumer, and T.L. Hearn.
[Presented March 3-5, 1993, at the 8th ASTPHLD Conference on Human Retrovirus Testing in
Atlanta, Georgia]
Results of T-Lymphocyte Immunophenotyping and Blind Proficiency Testing.
K.M. Peddecord, A.S. Benenson, L.K. Hofherr, D.P. Francis, R.S. Garfein, R.N. Taylor, W.O.
Schalla, G.D. Cross, J. Rau, and J.L. Cross. [Presented March 3-5, 1993 at the 8th ASTPHLD
Conference on Human Retrovirus Testing in Atlanta, Georgia]
Serologic Testing for HIV-1: Status of Western Blot (WB) Testing and
Inconsistent Interpretation of WB Testing Results in a Model Performance Evaluation
Program (MPEP) - 1989-1992. S.O. Blumer, W.O. Schalla, J.H. Handsfield, J.S. Hancock, G.D.
Cross, and T.L. Hearn. [Presented June 7-11, 1993 at the IX International Conference on
AIDS in Berlin, Germany]
HIV/AIDS: Characteristics of Laboratories Enrolled in a T-Lymphocyte
Immunophenotyping (TLI) Model Performance Evaluation Program (MPEP) and Their Testing
Practices. W.O. Schalla, G.D. Cross, S.O. Blumer, T.L. Hearn, and C.L. Collins. [Presented
June 7-11, 1993 at the IX International Conference on AIDS in Berlin, Germany]
Evaluation of Laboratory Performance of T-Lymphocyte Immunophenotyping
(TLI) in Support of Early HIV-1 Intervention and Management of HIV-1-Infected Patients.
G.D. Cross, W.O. Schalla, J.H. Handsfield, S.O. Blumer, T.L. Hearn, and C.L. Collins.
[Presented June 7-11, 1993 at the IX International Conference on AIDS in Berlin, Germany]
Clinician Practices in Ordering T-Lymphocyte Immunophenotyping (TLI) and
Use of TLI Results in the Care and Management of HIV-1 Infected Patients. C.L. Collins,
W.O. Schalla, G.D. Cross, T.L. Hearn, and S.O. Blumer. [Presented June 7-11, 1993 at the
IX International Conference on AIDS in Berlin, Germany]
CD4+ T-Lymphocyte Testing in the Nation's Laboratories. T.L. Hearn.
[Presented June 23, 1993 at the National Conference on T-Lymphocyte Immunophenotyping in
Atlanta, Georgia]
Clinician Usage of CD4+ T-Lymphocyte Testing. C.L. Collins. [Presented
June 23, 1993 at the National Conference on T-Lymphocyte Immunophenotyping in Atlanta,
Georgia]
Performance Evaluation and Proficiency Testing: Model Performance
Evaluation Program. W.O. Schalla. [Presented June 24, 1993 at the National Conference on
T-Lymphocyte Immunophenotyping in Atlanta, Georgia]
Serologic Testing for HIV-1: Western Blot (WB) Testing and Inconsistent
Interpretation of WB Results in a Model Performance Evaluation Program. S.O. Blumer.
[Presented September 1-3, 1993 at the Consortium for Retrovirus Serology Standardization
meeting in Tempe, Arizona]
Description of Lab-Link Computer Based Electronic Information System.
R.N. Taylor. [Presented September 1-3, 1993, at the Consortium for Retrovirus Serology
Standardization meeting in Tempe, Arizona]
Objectives of the MPEP and Recent Data from the TLI Survey Questionnaire
and Specimen Testing Results. W.O. Schalla. [Presented September 15-18, 1993 at the
Clinical Applications of Cytometry Annual Meeting in Charleston, South Carolina]
Testing for HIV-1 Antibody (Ab): Discrepancies in Western Blot (WB)
Interpretations Reported in a Model Performance Evaluation Program (MPEP). J.H.
Handsfield, W.O. Schalla, S.O. Blumer, and T.L. Hearn. [Presented October 24-28, 1993 at
the APHA 121st Annual Meeting in San Francisco, California]
CD4+ Cell Counts Versus Percentages: What Should We Use? K.M. Peddecord,
A.S. Benenson, L.K. Hofherr, D.P. Francis, R.S. Garfein, R.N. Taylor, W.O. Schalla, G.D.
Cross, J. Rau, and J.L. Cross. [Presented October 24-28, 1993 at the APHA 121st Annual
Meeting in San Francisco, California]
Testing Practices of Laboratories that Test for HIV Infection:
Identification of Trends in the Testing Process. W.O. Schalla, S.O. Blumer, L.A. Cooper,
R.J. Fehd, T.L. Hearn, and C.L. Collins. [Presented December 12-16, 1993, at the First
National Conference on Human Retroviruses and Related Infections in Washington, DC]
HIV-1 Western Blot (WB) Testing: Errors in Interpretation of WB Testing
Results in a Model Performance Evaluation Program (MPEP). S.O. Blumer, W.O. Schalla, J.H.
Handsfield, J.S. Hancock, and T.L. Hearn. [Presented December 12-16, 1993, at the First
National Conference on Human Retroviruses and Related Infections in Washington, DC]
Evaluation of Laboratory Performance of T-Lymphocyte Immunophenotyping
(TLI) in Support of HIV-1 Infected Patient Intervention and Management. G.D. Cross, W.O.
Schalla, R.N. Taylor, J.H. Handsfield, T.L. Hearn, and C.L. Collins. [Presented December
12-16, 1993, at the First National Conference on Human Retroviruses and Related Infections
in Washington, DC]
Compliance of Laboratories Performing T-Lymphocyte Immunophenotyping by
Flow Cytometry with CDC and NCCLS Guidelines. R.N. Taylor, G.D. Cross, W.O. Schalla, and
J.H. Handsfield. [Presented December 12-16, 1993, at the First National Conference on
Human Retroviruses and Related Infections in Washington, DC]
Testing Trends in the T-Lymphocyte Immunophenotyping (TLI) Laboratory:
Data from a National Performance Evaluation (PE) Program. W.O. Schalla, G.D. Cross, R.N.
Taylor, J. Hall-Dean, T.L Hearn, and C.L. Collins. [Presented December 12-16, 1993, at the
First National Conference on Human Retroviruses and Related Infections in Washington, DC]
Blind Proficiency Studies for T-Lymphocyte Immunophenotyping. D.P.
Francis, K.M. Peddecord, A.S. Benenson, L.K. Hofherr, R.S. Garfein, J. Rau, Q. Xie, D.B.
Scarf, G.D. Cross, and W.O. Schalla. [Presented December 12-16, 1993, at the First
National Conference on Human Retroviruses and Related Infections in Washington, DC]
Report Content of HIV-1 Antibody Testing Results. K.M. Peddecord, A.S.
Benenson, L.K. Hofherr, D.P. Francis, R.S. Garfein, J. Rau, Q. Xie, D.B. Scarf, R.N.
Taylor, and W.O. Schalla. [Presented December 12-16, 1993, at the First National
Conference on Human Retroviruses and Related Infections in Washington, DC]
Algorithm for HIV-1 Antibody Testing: Data from a Model Performance
Evaluation Program. W.O. Schalla. [Oral Program presentation March 2-4, 1994, at the 9th
ASTPHLD Conference on Human Retrovirus Testing in Reno, Nevada]
Intershipment Reproducibility of HIV-1 Western Blot Results Reported in
Five Paired Shipment Periods by Laboratories Participating in the Centers for Disease
Control and Prevention (CDC) Model Performance Evaluation Program. S.O. Blumer, J.H.
Handsfield, and W.O. Schalla. [Presented March 2-4, 1994, at the 9th ASTPHLD Conference on
Human Retrovirus Testing in Reno, Nevada]
Evaluation of Laboratory Performance of T-Lymphocyte Immunophenotyping
(TLI) In Support of HIV-1 Infected Patient Care and Management. G.D. Cross, W.O Schalla,
R.N. Taylor, and J.H. Handsfield. [Presented March 2-4, 1994, at the 9th ASTPHLD
Conference on Human Retrovirus Testing in Reno, Nevada]
Quality Assurance in HIV-Antibody Testing. W.O. Schalla. [Presented
January 17-20, 1995 at the VI Meeting of the Laboratory Directors of National Reference
Laboratories in the Americas, Vancouver, British Columbia, Canada.]
Split Patient Specimens: Achieving A More Accurate Measure of
HIV-Antibody Testing Performance. W.O. Schalla, S.O. Blumer, R.N. Taylor, T.L. Hearn, E.E.
Gaunt, S.K. Seilkop, and D. A. Holzworth. [Presented January 29-February 2, 1995 at the
Second National Conference on Human Retroviruses and Related Infections in Washington, DC]
Variable Hematology Results Due To Specimen Alterations Encountered in
Developing A Protocol For A T-Lymphocyte Immunophenotyping Proficiency Testing Program.
G.D. Cross, W.O. Schalla, R.N. Taylor, E.E. Gaunt, R.D. Cohn, S.K. Seilkop, and D.A.
Holzworth. [Presented January 29-February 2, 1995 at the Second National Conference on
Human Retroviruses and Related Infections in Washington, DC]
Trends In Compliance of Laboratories Performing T-Lymphocyte
Immunophenotyping by Flow Cytometry With CD4-Cell Testing Guidelines. R.N. Taylor, G.D.
Cross, W.O. Schalla, and J.H. Handsfield. [Presented January 29-February 2, 1995 at the
Second National Conference on Human Retroviruses and Related Infections in Washington, DC]
Does The Current Level of Laboratory Reliability of CD4+ Absolute Counts
Merit the Current Level of Physician Confidence In This Test? K.M. Peddecord, D.P.
Francis, A.S. Benenson, L.K. Hofherr, S. Pery, Q. Xie, D.S. Scharf, R.N. Taylor, G.D.
Cross, and W.O. Schalla. [Presented January 29-February 2, 1995 at the Second National
Conference on Human Retroviruses and Related Infections in Washington, DC]
The CDC Model Performance Evaluation Program for HIV-1 Antibody Testing.
T.L. Hearn. [Presented January 30, 1995 at the WHO Consultation Meeting On The
Coordination of Quality Assessment Programmes For HIV Testing, Geneva, Switzerland]
Blind Performance Evaluation: Achieving A More Accurate Measure of
HIV-Antibody Testing Performance. W.O. Schalla, S.O. Blumer, R.N. Taylor, T.L. Hearn, E.E.
Gaunt, S.K. Seilkop, and D.A. Holzworth. [Presented March 6-9, 1995 at the 10th Annual
Conference On Human Retrovirus Testing (ASTPHLD) in Reno, Nevada]
Performance of Laboratories Testing HIV-1 Seroconversion Samples in the
CDC Model Performance Evaluation Program August 1994 Survey Panels. S.O. Blumer and W.O.
Schalla. [Presented March 6-9, 1995 at the 10th Annual Conference On Human Retrovirus
Testing (ASTPHLD) in Reno, Nevada]
Variable Hematology Results Due To Specimen Alterations Encountered in
Developing A Protocol For A T-Lymphocyte Immunophenotyping Proficiency Testing Program.
G.D. Cross, W.O. Schalla, R.N. Taylor, E.E. Gaunt, R.D. Cohn, S.K. Seilkop, and D.A.
Holzworth. [Presented March 6-9, 1995 at the 10th Annual Conference On Human Retrovirus
Testing (ASTPHLD) in Reno, Nevada]
Trends In Compliance Of Laboratories Performing T-Lymphocyte
Immunophenotyping By Flow Cytometry With CD4-Cell Testing Guidelines. R.N. Taylor, G.D.
Cross, W.O. Schalla, and J.H. Handsfield. [Presented March 6-9, 1995 at the 10th Annual
Conference On Human Retrovirus Testing (ASTPHLD) in Reno, Nevada]
Does The Current Level of Laboratory Reliability of CD4+ Absolute Counts
Merit the Current Level of Physician Confidence In This Test? K.M. Peddecord, D.P.
Francis, A.S. Benenson, L.K. Hofherr, S. Pery, Q. Xie, D.S. Scharf, R.N. Taylor, G.D.
Cross, and W.O. Schalla. [Presented March 6-9, 1995 at the 10th Annual Conference On Human
Retrovirus Testing (ASTPHLD) in Reno, Nevada]
Results Of A Telephone Survey Of Local Health Departments On Laboratory
Use For The HIV-1-Infected Patient. L.K. Hofherr, D.P. Francis, K.M. Peddecord, A.S.
Benenson, J.A. Drew, R.N. Taylor, and W.O. Schalla. [Presented March 6-9, 1995 at the 10th
Annual Conference On Human Retrovirus Testing (ASTPHLD) in Reno, Nevada]
Reliability of Absolute CD4 Counts Between Laboratories: Results From A
Pilot Study. G.D. Cross, W.O. Schalla, R.N. Taylor, M.T. Siragusa, R.D. Cohn, E.E. Gaunt,
and D.A. Holzworth. [Presented at the Clinical Cytometry Tenth Annual Meeting, August
16-19, 1995, Charleston, South Carolina]
Use of Multiple Response Analysis To Characterize Physician=s Use of
CD4+ Counts in Clinical Management of HIV+ Patients. S. Perry, K.M. Peddecord, L.K.
Hofherr, A.S. Benenson, D.P. Francis, R.N. Taylor, and W.O. Schalla. [Presented October
14-17, 1995 at the Society for Medical Decision Making 17th Annual Meeting, Tempe,
Arizona]
Determination of CD4+ Absolute Counts: Some Factors Affecting Hematology
Analyzer Results. W.O. Schalla, G.D. Cross, R.N Taylor, M.T. Siragusa, R.D. Cohn, M.J.
Borowitz, R.A. Bray, P.E. Hurtubise, A.L. Jackson, J.A. Koepke, A. Landay, J.K.A.
Nicholson, W.J. Rickman, G.T. Stelzer. [Presented at the December 12-13, 1995, at the 2nd
National Conference on CD4+ T-Lymphocyte Immunophenotyping, Atlanta, Georgia]
Centers for Disease Control and Prevention (CDC) Model Performance
Evaluation Program (MPEP): Enzyme Immunoassay and Western Blot Testing Errors. W.O.
Schalla. [Presented March 6-8, 1996 at the 11th Annual Conference On Human Retrovirus
Testing (ASTPHLD), Orlando, Florida]
Local Health Officer Opinions of Future HIV-Related Demands Upon Local
Health Departments. C.E. Rigdon, L.K. Hofherr, D.P. Francis, K.M. Peddecord, A.S.
Benenson, R.N. Taylor, W.O. Schalla. [Presented March 6-8, 1996 at the 11th Annual
Conference On Human Retrovirus Testing (ASTPHLD), Orlando, Florida]
Performance of Laboratories Using Rapid and/or Simplified Methodology to
Test for HIV-1 Antibody in Six CDC Model Performance Evaluation Program Surveys. S.O.
Blumer, W.O. Schalla, R.J. Fehd. [Presented March 6-8, 1996 at the 11th Annual
Conference On Human Retrovirus Testing (ASTPHLD), Orlando, Florida]
Characterization of Laboratory Practice in CD4+ T-Cell Testing
Laboratories by On-Site Observation. R.N. Taylor, G.D. Cross, W.O.Schalla, M.T. Siragusa.
[Presented January 28 - February 1, 1997 at the Third National Conference on Human
Retrovirus and Related Infections, Washington, DC]
Intra-Shipment Reproducibility of HIV-1 Western Blot (WB) Results
Reported in Ten Shipment Periods by Laboratories Participating in the Centers for Disease
Control (CDC) Model Performance Evaluation Program (MPEP). S.O. Blumer, W.O. Schalla, R.J.
Fehd. [Presented January 28 - February 1, 1997 at the Third National Conference on Human
Retrovirus and Related Infections, Washington, DC]
Results of a Telephone Survey of Local Health Departments on Laboratory
Use for the HIV-1 Infected Patient. L.K. Hofherr, D.P. Francis, K.M. Peddecord, A.S.
Benenson, C.E. Rigdon, R.N. Taylor, W.O. Schalla. [Presented February 25-28, 1997 at the
12th Annual Conference on Human Retrovirus Testing]
Inter-Shipment Reproducibility of HIV-1 Testing Results Reported by
Laboratories Participating in the Centers for Disease Control (CDC) Model Performance
Evaluation Program (MPEP). S.O. Blumer, W.O. Schalla, R.J. Fehd. [Presented February
25-28, 1997 at the 12th Annual Conference on Human Retrovirus Testing, Houston, Texas]
Using Quality Control Material is Associated With Reduced Errors In HIV
Antibody Testing. J.R. Astles, H.B. Lipman, T.L. Hearn, W.O. Schalla, S.O. Blumer, R.J.
Fehd, C. Smith. [Presented February 25-28, 1997 at the 12th Annual Conference on Human
Retrovirus Testing, Houston, Texas]
Laboratory Performance in Human T-Lymphotropic Virus Types I/II
(HTLV-I/II) Analyses. L.O. Williams, S.O. Blumer, W.O. Schalla, P.H. Robinson, J.H.
Handsfield, R.J. Fehd, J.S. Hancock, H.B. Lipman, T.L. Hearn. [Presented May 4-8, 1997 at
the 97th Annual Meeting of the American Society for Microbiology; Miami, Florida]
Quality Assurance in HIV Antibody Testing. W.O. Schalla. [Presented at
the 3rd International HIV/AIDS Conference, Seoul, Korea, November 19-21, 1997]
Analysis of Results Reported By Laboratories Participating in the CDC
Model Performance Evaluation Program for HIV-1 RNA Determinations. W.O. Schalla.
[Presented March 3, 1997 at the Consortium for Retrovirus Serology Standardization Annual
Meeting, La Jolla, CA]
Analysis of p24 Antigen Testing Results Reported to the CDC Model
Performance Evaluation Program By Laboratories Participating in the June 1997 Survey. S.O.
Blumer, W.O. Schalla., T.L. Hearn, and R.J. Fehd. [Presented March 4, 1997 at the 13th
Annual Conference on Human Retrovirus Testing, San Diego, CA]
Analysis of Results Reported By Laboratories Participating in the CDC
Model Performance Evaluation Program for HIV-1 RNA Determinations. W.O. Schalla.,
S.O.Blumer, T.L. Hearn, and R.J. Fehd. [Presented March 4, 1997 at the 13th
Annual Conference on Human Retrovirus Testing, San Diego, CA]
Results of a Survey Examining HIV Viral Report Content. D.P. Francis,
K.M. Peddecord, A.S. Benenson, L.K. Hofherr, C. Rigdon, J.R. Astles, and W.O. Schalla.
[Presented March 4, 1997 at the 13th Annual Conference on Human Retrovirus
Testing, San Diego, CA]
Results of a Telephone Survey of Laboratory Practices for Viral Load
Testing. D.P. Francis, L.K. Hofherr, K.M. Peddecord, A.S. Benenson, C. Rigdon, J.R.
Astles, and W.O. Schalla. [Presented March 4, 1997 at the 13th Annual
Conference on Human Retrovirus Testing, San Diego, CA]
Comparison of Absolute CD4 T-Cell Counts, Multi-Platform vs. Single
Platform Methods: Results From a Performance Evaluation Program. G.D. Cross, J.H.
Handsfield, and W.O. Schalla. [Presented August 19-22, 1998 at the Clinical Applications
of Cytometry, 13th Annual Meeting, Charleston, SC]
Evaluation of Laboratory Performance in Determining HIV-1 RNA Levels
Present in CDC Performance Evaluation Samples. S.O. Blumer, W.O. Schalla, T.L. Hearn, and
R.J. Fehd. [Presented June 28-July 3, 1998 at the 12th World AIDS Conference,
Geneva, Switzerland]
Comparison of Absolute CD4 and CD* T-Cell Results Measured By
Multi-Platform and Single Platform Methods. G.D. Cross, J.H. Handsfield, and W.O. Schalla.
[Presented September 16-18, 1998 at the CDC Conference on the Laboratory Science of HIV]
Analysis of p24 Antigen Testing Results Reported to the CDC Model
Performance Evaluation Program By Laboratories Participating in the June 1997 and March
1998 Surveys. S.O. Blumer, W.O. Schalla., T.L. Hearn, and R.J. Fehd. [Presented September
16-18, 1998 at the CDC Conference on the Laboratory Science of HIV]
Evaluation of Laboratory Performance in Determining HIV-1 RNA Levels
Present in CDC Performance Evaluation Samples. S.O. Blumer, W.O. Schalla, T.L. Hearn, and
R.J. Fehd. [Presented September 16-18, 1998 at the CDC Conference on the Laboratory
Science of HIV]
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