Know More About This Test

The HBsAg test detects the presence of hepatitis B surface antigen in the blood, which indicates an active hepatitis B virus (HBV) infection. This marker appears early in infection and persists in chronic hepatitis B, making it a cornerstone test for diagnosis and screening.

Hepatitis B is a viral infection that affects the liver and may progress to chronic hepatitis, cirrhosis, or liver cancer if untreated.

Why Is This Test Recommended?

This test is recommended during routine health checkups, antenatal screening, blood donation, pre-operative evaluation, and for individuals with abnormal liver enzymes or symptoms of liver disease.

What Do the Results Indicate?

• A positive result indicates current HBV infection (acute or chronic).

• A negative result suggests absence of active infection or successful vaccination.

How Is the Test Performed and Prepared For?

A blood sample is collected. No fasting or special preparation is required.

Frequently Asked Questions (FAQs)

• Does positive mean chronic hepatitis? Depends on duration

• Can vaccinated people test positive? No

• Is hepatitis B contagious? Yes

• Can infection be asymptomatic? Very often

• Is treatment always required? Depends on stage