Overview

• Purpose: The HSV-1 IgG (Immunoglobulin G) test detects antibodies for the herpes simplex virus type 1, commonly associated with oral herpes.
• Timing: IgG antibodies take a few weeks to develop after infection and can persist for life. Thus, a positive result indicates past exposure or infection rather than an active or recent infection.

Risk Assessment

• High-Risk Groups: People with weakened immune systems, such as those with HIV, undergoing chemotherapy, or organ transplant recipients, are at higher risk for complications if they contract HSV-1.
• Transmission: HSV-1 is highly contagious, primarily through oral-to-oral contact (e.g., kissing or sharing utensils) and can be transmitted even when sores aren't visible.

Negative: No detectable HSV-1 IgG antibodies.

Positive: Presence of HSV-1 IgG antibodies, indicating a past or ongoing infection.

Positive HSV-1 IgG: Indicates prior exposure to HSV-1. It does not confirm an active infection but shows that the immune system has responded to the virus.

Negative HSV-1 IgG: Suggests no prior exposure to HSV-1, or it may be too early after exposure for antibodies to form.

Sample Type: Blood sample, typically drawn from a vein in the arm.