Actually it isn't all that complicated...
IN the vast majority of people with a positive ELISA and an indeterminate WB, when we do follow up testing , they turn out to be negative. In a small number who are positive, it is from a recent exposure/ infection and they are in the process of developing all the WB bands to become fully positive. In the rest, it is just a non-specific cross reaction.
From your WB, this is indeed indeterminate- the gp160 is a precursor to the envelope protein, but it sounds like you did not have any antibodies to the GAG or polymerase gene products. Your result is truly indeterminate- and could be from either of the 2 possibilities I described above.
Based on your low risk exposure, the most likely will be it will turn out to be a false positive ELISA. I certainly would agree with repeating the test again, or even better doing a HIV RNA PCR, which will be even more sensitive. Understandably you are quite anxious, and possibly depressed.
I can try to explain that the vast majority of people with these results ( and I do see this not uncommonly) turn out to be negative, but until you get the follow up testing, there is no way to totally calm you down or reassure you.
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