 [ Symptoms ] my hiv test came back negative a positive test person was in the room before me could i have been exposed to hiv  i touched the countertop doorknob of the room etc [ Disease ] hiv is scary but unfortunately nothing in life is 100 but i can tell you that hiv cannot live outside the body for long at all at the very longest 2 minutes and that is a generous estimate there are no cases of someone catching hiv in the way you described and especially in a general testing site where the vast majority of people who test come back negative   so in that respect even if there was any blood on the counter its likely from hiv negative blood