Herpes Simplex Virus Type 2 Immunoglobulin G Antibody (IgG) - Serology

Why This Test Might Be Ordered

Your healthcare provider may order this test if you have symptoms like sores, itching, or unusual discharge in the genital area, or if you’ve been diagnosed with genital herpes. It may also be used to confirm a diagnosis, screen for past infection, or evaluate exposure in certain high-risk situations, such as pregnancy or sexual health assessments.

What to Expect Before the Test

No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw blood, which usually causes only mild discomfort. If you’re pregnant or have a history of bleeding disorders, let your provider know before the test.

What the Test Results Mean

Positive results indicate the presence of HSV-2 IgG antibodies, suggesting past exposure to the virus. Negative results mean the antibodies were not detected, but this does not rule out current infection. If you’re concerned about symptoms, discuss them with your healthcare provider.

Common Uses and Limitations

This test is primarily used to detect past infection rather than active disease. It cannot distinguish between past infection and current infection, and false negatives or positives can occur, especially in early or late stages of infection.