A negative test outcome for VDRL and TPHA together at 4 weeks is ok to rule out syphilis. HCV is not really transmitted sexually. HBsAg negativity is fine at this time. Your prescription drugs wouldn't have interfered with test effects. I'd only want you to repeat an ELISA for HSV https://miloljzsh.laowaiblog.com/35927444/details-fiction-and-hiv-test-conclusive