I had a low risk exposure. I got tested for HIV RNA at 10 days and then at 19 days both came negative. How accurate are these tests and should be testing for antibody test at 6 weeks to be sure. Have you seen any cases where the test has been negative at post 11 days but positive with the antibodies at 6 weeks. Also how accurate are the test for syphillis and HSV at 19 days. Given I have no symptoms and both were negative. Thank you