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Alternative names Return to top
Spinal fluid smearDefinition Return to top
CSF smear is a microscopic examination of cerebrospinal fluid (CSF). CSF is a clear fluid that circulates in the space surrounding the spinal cord and brain. CSF protects the brain and spinal cord from injury and carries products of neurosecretions (chemicals released by the neural tissue), nutrients, chemicals in the cells, and chemical changes in the cells.How the test is performed Return to top
The CSF is usually obtained through a lumbar puncture (spinal tap).How to prepare for the test Return to top
Preparation is the same as for CSF collection.How the test will feel Return to top
The position may be uncomfortable, but it is imperative that the person remain in the curled position to avoid moving the needle and possibly injuring the spinal cord.Why the test is performed Return to top
The examination under the microscope checks for microorganisms that may be causing an infection.Normal Values Return to top
The absence of bacteria (a sterile fluid) is normal.What abnormal results mean Return to top
Bacteria or other microorganisms (tuberculosis, fungus, or viruses) are present, indicating bacterial meningitis or other infection.What the risks are Return to top
Special considerations Return to top
Not applicable. Update Date: 1/26/2004 Updated by: Daniel Levy, M.D., Ph.D., Infectious Diseases, Greater Baltimore Medical Center, Baltimore, MD. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |