If both were same tests, there are different way that lab reports the results. For example, Let say 4th Gen Ab/Ag test, one lab reports as non-reactive, another one reports as negative, etc..
If you really had a RISK, get it tested at 84 days/91 days to be conclusive...
80 days is not conclusive?? can I back to my partner?
it was one exposure without protection ( insertive ) and she told me she is clean .
thank you very much worriedofhiv2016 and malbat for your answers .