Could bring on an antibiotic like keflex give a false positive result on an oraquick oral test? i havent taken the std hiv test yet but want to make sure first?

Do a blood test: Oraquick is not a diagnostic tool for HIV. Any result (positive or negative) needs to be reevaluated with a blood test for either nucleic acids (virus), antibody or antigen. If you have unprotected sex, sex with someone who is HIV positive or in a high risk group, you should have a blood test at 14 days and at 6 months post exposure. Talk to a Dr about using PreP. Keflex not a problem.