Hi Worriedsoul, as we are a self test we do not ask people for their results or keep record of these if they are given to us. We pride ourselves in letting people take control of their own sexual health in a time and place where they feel comfortable. What I can say is that as with virtually all HIV rapid tests, the BioSURE HIV Self Test looks for antibodies to HIV, rather than the virus itself. If a person has produced antibodies then the test will detect them. 50% of people have produced these at 4 weeks, 95% have produced the antibodies at 8 weeks and 99.9% of people have at 12 weeks. This is why a negative test result can only be deemed conclusive at 12 weeks. I hope this has helped put your mind at rest. Kindest regards Francesca Bard, BioSure (UK) Ltd

Hi, looking at all this - was there a comeback when a person tested negative at 42 days, and only to test positive at 12 weeks?

Hi Terrified. As with virtually all HIV rapid tests, the BioSURE HIV Self Test looks for antibodies to HIV, rather than the virus itself. If a person has produced antibodies then the test will detect them, but because of how immune systems work, people produce these at different times and rates after contracting the virus. Most people have made these antibodies by 4 weeks but some people can produce them as late as 12 weeks later. This is why we say a negative result cannot be relied upon within this period and it is recommended to test again at 3 months after exposure. A positive test result can always be relied upon as it means antibodies to HIV have been detected. If you feel at all uncomfortable as your exposure is within the last 3 months then we would recommend you visit a clinic that can offer you a laboratory based test. Please feel free to contact me via email (fbard@biosure.co.uk) if you need more information. I hope this helps. Kindest regards Francesca Bard, BioSure (UK) Ltd