Nov 13, 1998
can having negative blood cause the hiv bands to appear?i read this in a article so i know it is possible but how so?
| Response from Dr. Holodniy
Yes, some people can have false positive ELISA antibody or western blot tests and not be infected. This can rarely occur because of liver diseases, cancers, any autoimmune disease which causes an increased antibody production, or other viruses that are close cousins to HIV-1 , like HIV-2, HTLV-1 or 2. These diseases cause antibodies to be produced that are close enough to those made against HIV, that they stick in the test tube where it should only be HIV antibodies doing the sticking. This causes false positive tests. Some times we have to do more sophisticated tests like viral load testing or DNA PCR to rule out infection. MH
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