HBsAg Test in Chennai

What is the Hepatitis B Surface Antigen Test?

The Hepatitis B Surface Antigen test detects a specific protein (HBsAg) on the surface of the hepatitis B virus. It is the earliest and most reliable marker of active HBV infection, appearing in the blood as soon as 1–9 weeks after exposure. A positive result confirms current infection, while the test helps distinguish between acute (short-term) and chronic (long-term, persisting over 6 months) cases.

This test is commonly recommended for:

• Routine screening in high-risk groups (e.g., healthcare workers, pregnant women, blood donors)
• Evaluation of unexplained liver enzyme elevations
• Pre-vaccination assessment or post-exposure checks
• Monitoring chronic hepatitis B patients

HBsAg Test Types

• Common formats include:
• Qualitative tests (report reactive/non-reactive) – widely used for initial screening
• Quantitative tests (measure antigen levels in IU/mL) – helpful for monitoring treatment response or viral load correlation
• Rapid point-of-care tests – provide quick results but may require confirmation

At Unittas Hospital, we use standardised, high-sensitivity immunoassays for dependable outcomes.

HBsAg Test Procedure

The process is straightforward and safe:

A small blood sample is collected from a vein in your arm.

No fasting or special preparation is usually required.

The sample undergoes immunoassay analysis (e.g., enzyme-linked or chemiluminescent methods).

Results are typically available within a few hours to the same day.

The entire visit takes just minutes, with minimal discomfort.

Interpreting Your Results

HBsAg test negative: No hepatitis B surface antigen detected, meaning no active HBV infection at the time of testing. This could indicate no past exposure, resolved infection (with immunity), or successful vaccination (check anti-HBs for protection).

Positive result: Active infection present; further tests (e.g., HBV DNA, HBeAg, liver function) are advised to assess stage and need for treatment.

Early detection allows timely intervention to prevent liver complications like cirrhosis or cancer.

Why Choose Unittas Hospital?

Unittas Multispeciality Hospital is a NABH-accredited centre with branches in Tambaram and Kelambakkam, conveniently located for patients across Chennai and the OMR corridor. Our state-of-the-art in-house laboratory features advanced analysers for precise diagnostic testing, supported by experienced pathologists and specialists who deliver expert interpretation and personalised guidance.

We ensure quick turnaround with same-day or next-day results in most cases, comfortable phlebotomy areas, private spaces for result discussions, and seamless connections to specialist consultations — all in a single facility. With a strong emphasis on compassionate, patient-focused care, hygienic premises, and flexible timings, Unittas is a trusted choice for reliable diagnostics in Chennai.