HIV does not show up on tests immediately after infection. There is a period known as the window period, when the virus is in the body but test results may still be negative. Understanding this timeline helps people test at the right time and avoid false reassurance.
Days 1–7 after exposure
In the first week after infection, HIV tests are usually negative. The virus is still multiplying, and the immune system has not produced detectable markers.
Testing at this stage is not reliable, even with advanced methods..Read The Complete Original.