ANTI HEPATITIS A VIRUS (HAV)IgM Detail

The Anti-HAV IgM test is a blood test used to detect Immunoglobulin M (IgM) antibodies produced in response to a recent infection with the Hepatitis A virus (HAV). Hepatitis A is a highly contagious liver infection caused by ingestion of food or water contaminated with fecal matter.

A positive Anti-HAV IgM result indicates:

• Recent or acute infection with Hepatitis A

• The person is in the early stage of illness and may be infectious

• In symptomatic individuals, it confirms the cause of acute viral hepatitis

This test is commonly ordered in:

• Patients with jaundice, elevated liver enzymes, and gastrointestinal symptoms

• Outbreak investigations of foodborne illness

• Screening of close contacts of HAV-positive individuals

• Travelers returning from endemic areas with hepatitis-like symptoms

Unlike Hepatitis B and C, Hepatitis A does not become chronic, and most people recover completely. Detection of IgM antibodies typically occurs within days of symptom onset and may remain detectable for up to 6 months.