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The Duo HIV test that looks for both HIV antigens and antibodies has a window period of 50 days. The negative HIV tests you had at 11 weeks and 5 days means you did not get HIV from that exposure and there is no need for further HIV testing for that event. There would be no possibility of a positive later unless you had a new exposure.
Let us know if you have any more questions or concerns.
This answer was posted on July 13, 2018