Blood banks policy. You can't give blood if you've paid for sex for a year. You can't give blood if you are gay. Had a tattoo within the year. The blood banks have hard core policies to protected the blood supply.
Teak, but what about those questions before the blood donation? What if you just lived in Africa for a wile, you can't donate blood?
Anyway, do you know if there is a place I can go to have more advanced tests besides ELISA and HIV 1 PCR
You aren't going to find a more advanced test.