Hi NiceGuy Thank you for contacting us. The "window period" for HIV tests is a complex issue. The two negative test results are extremely encouraging, particularly the test at 10 weeks. The flu-like symptoms of early HIV seroconversion illness are a consequence of a persons immune system kicking in to fight the virus. This process very quickly leads to your body creating antibodies to the HIV virus. The BioSURE HIV Self Test looks for these antibodies. Given that you started to get the symptoms 6 weeks ago, if the symptoms were a consequence of HIV, rather than a benign virus like flu or the common cold, then your BioSURE HIV Self Test would have been positive. I think that you can rely on your negative result regardless that your last test was inside the recommended 12 weeks. I hope that this answers your question. Kind regards Gary Carpenter BioSure (UK) Limited

Oh, forgot to add that symptoms started 4 weeks after potential exposure so I'm counting 6 and 10 weeks since exposure not since start of the symptomes.