4 doctors weighed in:

What are the chances of a missed HIV infection after an elisa?

4 doctors weighed in
Dr. Martin Raff
Internal Medicine - Infectious Disease
3 doctors agree

In brief: Depends

It takes at least 10-14 days for antibodies to form after initiation of infection, and if the elisa assay is done before adequate levels of antibody are formed it may be falsely negative.
If it is negative and there has been the potential for exposure it should be repeated as often as necessary until 4-6 months have elapsed.

In brief: Depends

It takes at least 10-14 days for antibodies to form after initiation of infection, and if the elisa assay is done before adequate levels of antibody are formed it may be falsely negative.
If it is negative and there has been the potential for exposure it should be repeated as often as necessary until 4-6 months have elapsed.
Dr. Martin Raff
Dr. Martin Raff
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