Dear doctor, im wondering whether covid infection can cause delay of hiv window period. i tested hiv ag 0.39(co 0.25), negative ab use elisa @25 daysafter exposure. i got covid @day 35, retested hiv use roche ag/ab eclia @30,35,42,43,52 all negative?

You can quit testing for HIV. The testing you have done rules out HIV from the exposure 52 days ago, however, HIV is only one of the STDs. A condom may not protect against HPV, Herpes, LGV, syphilis, pubic lice etc. It would be prudent to see your doctor for an evaluation. Visit this site for information: https://www.cdc.gov/std/default.htm Wish you good health!

There are no medical conditions (and no drugs) that alter the reliability or timing the HIV antibody or AgAb tests -- zero, none, including Covid. You have been over tested and the results prove you do not have HIV. No more testing, please.