In BC, the HIV tests we use are accurate after 3 months. These are antibody and P24 tests. Your test was done at the recommended time (3 months) so you do not need to repeat it for the contact you had in August.
An exception is if you took Pep (post exposure prophylaxis). These are drugs taken for one month after a sexual contact to prevent HIV. In that case, we recommend you get tested again at 6 months.
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