Quote:
Originally Posted by Muhahaha
What is the chance % of infection if both party has unprotected sex after both tested negative after performing rapid antigen testing?
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You cannot get HIV from someone who does not have HIV
Unless what you are asking is what if the rapid antigen test is wrong.
There are many factors that influence the accuracy of rapid antigen testing. Side note: Nobody I know does just rapid antigen testing anymore. Most would do antigen + antibody testing. Anyways, the factors include:
1. When the test is done after exposure (window period)
This is particularly sensitive in rapid tests for antigen alone. Because the antigen level takes time to rise then drops after antibodies develop. So the window for testing is small.
2. Performance characteristics of the test kit
3. Whether or not the test is conducted properly