Doesn't matter: At 15 months, it doesn't matter. Any and all HIV tests that exist will detect HIV infection if more than a few weeks have passed and for sure after 3 months. If your test result was negative, for sure you don't have HIV. That said, my understanding is that most UK GUM clinics routinely use the duo test for antibody and antigen. But why don't you just call the clinic and ask?
Answered 6/19/2021
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