Hepatitis B surface antibody, total (qualitative/quantitative)

Why This Test Is Done

Your healthcare provider may order this test if you have risk factors for hepatitis B, such as recent travel to areas with high transmission rates, exposure to infected blood, or if you’re pregnant or have a chronic condition that increases risk. It can also be used to confirm immunity after vaccination or monitor for infection in people who may have been exposed.

What to Expect Before the Test

No special preparation is needed. A small needle will be used to draw blood from a vein in your arm. You may feel a slight pinch, but the procedure usually takes only a few minutes.

What the Test Results Mean

Results can be qualitative (positive/negative) or quantitative (measuring antibody levels). Positive results suggest immunity or past infection; further testing may be needed to confirm active infection. Negative results mean no detectable antibodies, which may require additional evaluation if risk factors are present.

Common Reasons for Testing

This test is often used in screening for hepatitis B, especially in high-risk groups like healthcare workers, travelers, or individuals with multiple sexual partners. It can also be part of routine check-ups for those who have received the hepatitis B vaccine.