Tks for the feedback I just want to be sure that the test is conclusive at 85 days and I need to wait for 90 days as I have already tested on 4 weeks - negative and 6 weeks a negative so I am sure that there is no further testing needed

Hi TEST VALIDITY, having the flu jab will not affect the result of your BioSURE HIV self test so feel free to retest whenever is convenient for you. Well done for retesting and actively taking control of your sexual health. Happy new year. Kindest regards Francesca Bard, BioSure (UK) Ltd

Planning to retest at 12 weeks I have had a flu jab a couple of days Ago will it impact in any ways the result of the test ? Or should I wait a week more ?

Hi TEST VALIDITY, your understanding is correct. I can confirm that our tests can be relied upon (negative result 12 weeks post exposure, positive result always). Our tests have been through numerous studies and as you can imagine we have had to prove the sensitivity and accuracy in great detail (especially being a worlds first). I would say to re-test at 12 weeks to confirm your negative result and then you can move forward making informed choices. Kindest regards Francesca Bard, BioSure (UK) Ltd

Hi took the test again at 6 weeks negative I understand now I am negative within the 95% who generally will have developed antibodies and have a 5% chance and this should be cleared if Re take the test after 12 weeks Kindly pls confirm again we can rely on the test and it’s results as this is a very sensitive test which can change lives so just reconfirming that they are approved and widely used by medical care units as I have seen them on the Nhs or Higgins trust for self testing website as well

Hi TEST VALIDITY, our test only looks for antibodies not antigens, sorry this was not made clearer. The reason our result cannot be conclusive at 4 weeks is because some people seroconvert later than others however by 12 weeks 99.9% of people would have seroconverted. I hope this helps Kindest regards Francesca Bard, BioSure (UK) Ltd

Can understand the window period to be sure although test accuracy is almost 100% which means the negative results are true the iv th gen test also look for ag/ab and not the virus so if the self test uses the same principle why would it be not conclusive after 4 weeks? or I am missing something basic?

Hi Test validity. The accuracy of the test never actually changes however a negative test result can only be relied upon 12 weeks post exposure. This is because the BioSURE HIV self test only looks for antibodies to HIV rather than the virus itself and due to the nature of individuals immune systems these are produced at different rates. At 4 weeks 50% of people would have produced these antibodies, at 6 weeks 95% of people would and at 12 weeks 99.9% would have the antibodies. This is why we say you need to retest at 12 weeks to get your conclusive result. I hope this helps. Kindest regards Francesca Bard, BioSure (UK) Ltd