Hep B Surface Antigen Test

The Hepatitis B Surface Antigen (HBsAg) Test detects the presence of HBsAg, a protein on the surface of the hepatitis B virus. This test helps diagnose hepatitis B infection and determine the stage of the infection.

Who would benefit from this test?

Individuals at risk for hepatitis B infection, such as those with a history of unprotected sex or intravenous drug use.

Patients with symptoms of acute or chronic hepatitis B infection, including fatigue or jaundice.

Individuals who require screening for hepatitis B as part of a routine health assessment.

People with known exposure to hepatitis B-infected blood or body fluids. Individuals with chronic hepatitis B infection requiring ongoing monitoring.

Why undertake this test?

To diagnose acute or chronic hepatitis B infection.

To determine the stage and severity of hepatitis B infection.

To monitor the effectiveness of hepatitis B treatment.

To identify individuals at risk for hepatitis B and guide preventive measures.

To provide appropriate medical care and management for hepatitis B infection.

Test Type: Serology

Results Estimated: 2 Working days.

A little more detail:

The Hepatitis B surface antigen (HBsAg) test is a blood test used to detect the presence of the hepatitis B virus (HBV) in the body. This test is essential for diagnosing an active hepatitis B infection and is often the first test performed when hepatitis B is suspected.

Key points about the HBsAg test include:

1. Detection of Infection: HBsAg is a protein on the surface of the hepatitis B virus. If HBsAg is present in the blood, it indicates that a person is currently infected with HBV, whether acutely or chronically.

2. Acute vs. Chronic Infection: The presence of HBsAg typically means that the virus is replicating, leading to an active infection. If HBsAg is positive for more than six months, it suggests chronic hepatitis B infection.

3. Screening and Monitoring: The HBsAg test is commonly used to screen high-risk populations, such as those with multiple sexual partners, individuals who inject drugs, and pregnant women, to prevent mother-to-child transmission.

4. Follow-Up Testing: If HBsAg is positive, additional tests (such as anti-HBs and HBV DNA tests) may be performed to assess the stage of infection and guide treatment options.

Early detection through the HBsAg test is crucial for effective management of hepatitis B, helping to prevent liver complications and reduce the risk of transmission to others. Regular screening is recommended for at-risk individuals to monitor their liver health and manage potential infections effectively.