Human Immunodeficiency Virus (HIV) Antibody Test – IgG, IgM, and Titer (Serum)

What Does This Test Measure?

The test measures three key components: HIV-specific IgG antibodies (long-term immune response), IgM antibodies (early immune response), and the virus’s antibody titer (a measure of how strongly your immune system is reacting). These components together provide a comprehensive view of your exposure and potential infection status.

Why Is This Test Important?

Detecting HIV antibodies early is critical for early diagnosis, treatment planning, and managing your health. IgG and IgM levels can indicate when you were likely exposed, while titer results help track immune response progression.

When Might You Need This Test?

You may need this test if you’ve had unprotected sex, shared needles, or other behaviors increasing HIV risk. It’s also recommended for routine screening in high-risk groups, as part of pre-exposure prophylaxis (PrEP) evaluation, or after potential exposure.

What Does a Positive Result Mean?

A positive result means your blood contains antibodies to HIV, suggesting past or current infection. This doesn’t confirm active HIV disease immediately—further testing (like viral load) is needed to determine if the virus is replicating.