THE PCR DNA DEBATE
Sep 17, 1998
Are the PCR DNA tests reliable. I hear the lab has to perform them several times in order for the test to be correct....is that true? I have had three in the past three months, all NEGATIVE, yet I was possibly exposed to the virus back in July 97'
Response from Dr. Holodniy
PCR based tests are reliable in competent hands, and in those labs which performs hundreds of test/month. It is difficult for a patient or consumer to know which lab is good and which one is not. Most credible labs will perform control tests (both HIV positive and negative) along with the patient samples to insure the validity of the test. If the controls don't work, then the test run is invalid. Three sequential negative PCR tests one month apart after an exposure over one year ago, would indicate no HIV infection was present. MH
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