Hello, thanks for using HCM.
Its really a wise decision to get tested especially after exposure in +which you are not sure of the other person's HIV
Fourth generation elisa
tests detect both HIV viral antigens and antibodies
and generally by the 6th week after exposure, they have a 95% chance of detecting an infection and over 99.9% after three months. They are very sensitive and will detect small amounts of antibodies and antigens.
Substantial amounts of HIV viral antibodies are usually produced only after three months and exceptionally after six months in some individuals. However, Fourth generation ELISA are capable of detecting low levels of antibodies and will not require that much time.
On your case, you stand a better chance of being negative because your ELISA fourth generation test was negative at 6 months after exposure and a screening test at 7months post exposure also was negative.
However, re doing the test again at least to be re-assured is not a bad idea.