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HIV testing is important and should be done if you have early HIV symptoms or are at high risk for HIV.
Symptoms
HIV, in its early stages, can present with many nonspecific symptoms, so the threshold for suspicion should be very low. These nonspecific symptoms include the following:
High-risk persons
If you had high-risk contact, you should be screened for HIV, and follow-up HIV testing should be done 4–6 months later (the timing depends on the screening test results). According to the CDC, the following persons are considered to be at high risk of contracting the HIV infection:
Different types of HIV tests should be done at different times:
The table below summarizes the most common HIV tests used for screening in the United States.
HIV test name | What it detects | Earliest time the HIV test can be done | Ideal time for HIV testing |
---|---|---|---|
HIV third-generation test | IgG, IgM |
|
99% accurate 50 days after exposure |
HIV fourth-generation | IgG, IgM + p24 |
|
99% accurate 44 days after exposure |
HIV RNA PCR | HIV virus itself |
|
99% accurate 42 days after exposure |
HIV DNA PCR | HIV virus itself |
|
99% accurate 42 days after exposure |
HIV P24 | P24 antigen |
|
99% accurate 36 days after exposure |
See more
See more