A unfavorable test final result for VDRL and TPHA jointly at 4 months is sufficient to rule out syphilis. HCV isn't transmitted sexually. HBsAg negativity is ok at this stage. Your drugs would not have interfered with test results. I'd only want you to repeat an ELISA for HSV at https://judahhcvnf.activosblog.com/35835905/hiv-test-conclusive-things-to-know-before-you-buy