I understand, yes, regarding the P24 testing window, and the risk of false negatives.
P24 has to be taken between weeks 1 and 4 and still have to be followed up with an antibody test at 3 months post exposure.
Ok, that is helpful to know that combo Ab/Ag tests are not available in the U.S.
Can anyone else know is knowledge about the P24 antigen test please respond about where, or under what lab codes, it exists in the U.S.
( I did see and appreciate the comment from Vance and respect that it may not be reliable for his general practice use. I think most would agree that reliability is more than one number and somewhat dependent on specific circumstances as well. )
Combo/DUO tests are not approved or sold in the US.
We don't recommend antigen tests because they are not reliable and the only test for diagnostic reasons is an antibody test, so that is the recommendation we give.
if you want to try to find these other tests try calling labcorp or your Dr's office or even the CDC.