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Definition Return to top
This is a test that measures the temperature of each finger after being submerged in an ice-water bath.How the test is performed Return to top
A heat sensor is taped to your fingers and the temperature is recorded. Your hand is then immersed in ice water for 20 seconds. Then it is removed from the bath and the temperature recorded every 5 minutes until your finger temperature is the same as it was before the bath.How to prepare for the test Return to top
No special preparation is necessary for this test.How the test will feel Return to top
There may be some discomfort while your hand is in the cold water.Why the test is performed Return to top
This test is a screening tool for Raynaud's phenomena.Normal Values Return to top
Normally your finger temperature will return to normal within 15 minutes after the cold water exposure.What abnormal results mean Return to top
If your finger temperature takes greater than 20 minutes to return to pre-bath levels, Raynaud's phenomena is indicated.What the risks are Return to top
There are no risks associated with this test.Special considerations Return to top
This test should not be performed if the blood supply to your fingers is compromised or if your fingers are infected. Update Date: 7/25/2003 Updated by: Lisa Christopher, M.D., Division of Rheumatology, Johns Hopkins Hospital, Baltimore, MD. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |