Wondering if I can get some clarity here: 8 months ago I had an encounter at a bar. It was dark and I was drunk and I can’t remember if I used a condom for vaginal sex. I got tested at 7 months with a fourth generation test. The result was negative. I was taking doxycycline for my acne at the time. I want to know if there’s any chance my hiv test was affected by a 200mg dose? I ask because doxycycline also treats STDs. Moreover I was looking to find answers on google and I came across this which says drug interference was checked for the following drugs and I’m very surprised to see there’s so many meds on the list like ascorbic acid, paracetamol, ibuprofen etc and even doxycycline and possible interferences of these drugs was tested but the concentrations tested are listed and I’m afraid I was taking more than 50 mg of doxycycline! They didn’t test more than 50mg which means as I was faking 200mg a day is my test wrong? I also remember taking a paracetamol couple hours before my test! Do these medicines affect hiv tests? What should I do now? What a bother! And if they don’t interfere than why does this tests package insert suggest they do? https://www.fda.gov/media/105906/download