Hepatitis B Surface Antigen Blood Test

Item # LC006510

Hepatitis B Surface Antigen Blood Test

Hepatitis B Surface Antigen Blood Test

Item # LC006510

The Hepatitis B Surface Antigen (HBsAg) test can be used in conjunction with other tests and clinical information to evaluate acute or chronic hepatitis B infection.

Hepatitis B is an infectious liver disease caused by the hepatitis B virus (HBV). Chronic HBV infection often does not cause symptoms in its early stages, so only about 33% of adults with chronic hepatitis are aware they are infected.

Hepatitis B surface antigen (HBsAg) is a distinctive serological marker of acute or chronic hepatitis B infection. HBsAg is the first antigen to appear following infection with HBV and is generally detected 1-10 weeks after the onset of clinical symptoms. HBsAg assays are routinely used to diagnose suspected HBV infection and monitor the status of infected individuals to determine whether the infection has resolved or the individual has become a chronic carrier of the virus.

This test helps screen for presence of the virus but does not provide information on current immunity. To check for immunity (antibodies) toward the hepatitis B virus, please see LC006395, Hepatitis B Surface Antibody Test (HBsAb / Anti-HBs)

A Negative result does not rule out the possibility of active hepatitis infection. There is sometimes a “core window” stage when HBsAg has become negative, and surface antibodies have not yet developed. When both HbsAg and Anti-HBs are negative, Hepatitis B Core Antibodies (HBcAb / Anti-HBc) (not available from Life Extension) are usually positive.

Summary of hepatitis B serological markers

  • Hepatitis B Surface Antigen (HBsAg) (LC006510)– indicates presence of the hepatitis B virus (infection).

  • Hepatitis B Surface Antibody (HBsAb / Anti-HBs) (LC006395) – indicates immunity toward the hepatitis B virus, either by past exposure or vaccination.

  • Hepatitis B Core Antibody (HBcAb / Anti-HBc) – indicates immune response toward hepatitis B virus, but does not imply immunity/protection against the virus. Often used to evaluate suspected infection when both HBsAg and HBsAb are negative (This test is not available from Life Extension).

Sample Report


Fasting is not required for this test. Take all medications as prescribed.

SALE: $35.00
Save 0%

Be the first to write a review

Write a Review

Hepatitis B Surface Antigen Blood Test


Life Extension - Why We Do It?

The Best Supplements Science Can Offer

When putting something in your body, you should be confident that you’re getting the nutritional benefits your body deserves. We've been delivering the highest-quality products—backed by science and formulated with the finest ingredients—for over 40 years.

What Matters to You, Matters to Us

We're committed to empowering you to live a healthier life. Whether it’s finding sustainable partners for our ingredients or funding the latest anti-aging research, we're all about your health & wellness.

Highly Recommended

98% of our customers recommend us to family and friends. We're very proud of that because our loved ones matter to us—and we're willing to bet you feel the same way.

Product Transparency

40 years of research dedicated to bringing you premium, scientifically-validated formulations.

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of Life Extension. We do not verify or endorse any claims made in these reviews. Full product reviews disclaimer