|HIV-1 antibody POS, NAT negative
Aug 23, 2007
I went to give blood last month. They mailed me this letter saying that HIV-1 is positive, NAT is negative and to follow up with my doc. WHAT? I am extremely low risk person and am very freaked out right now. I am moving forward with my doctor with a Western Blot test and its not back yet. Can you be truly HIV positive and NAT negative?
| Response from Dr. Frascino
The NAT test is more specific than the screening anti-HIV antibody test. Consequently your "positive HIV-1" and negative NAT would suggest the HIV-1 result was a false-positive. This would go along with your "extremely low risk" history. A follow-up repeat ELISA and Western Blot, if the ELISA is reactive, should quickly confirm your negative status. You can read more about false-positive tests, particularly from blood donor screening programs, in the archives.
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