Oct 11, 2025 · The HBsAg blood test detects hepatitis B. If you're positive, you are infectious. Learn about how the test is done and what the results mean.

HBsAg (Hepatitis B surface antigen) - A "positive" or "reactive" HBsAg test result indicates that a person is infected with hepatitis B. This test can detect the presence of the hepatitis B virus …

Learn about the HBsAg Test, its purpose, uses, normal values, test results interpretation, and more for a better understanding of your health.

Jan 31, 2025 · HBsAg: HBsAg is a protein on the surface of HBV that can be detected in high levels in serum during acute or chronic HBV infection. The presence of HBsAg indicates that …

Jun 5, 2025 · HBsAg screening is a blood test that tells you if you have a hepatitis B virus infection. Your healthcare provider takes a blood sample from a vein in your arm.

Sep 4, 2025 · What is the HBsAg Test? The HBsAg test, also known as the Hepatitis B Surface Antigen Test, is a blood test used to detect the Hepatitis B virus (HBV). The test specifically …

Jan 22, 2024 · One of these tests checks for the presence of hepatitis B surface antigens (HBsAg). This refers to proteins present on the surface of the HBV. A positive result for HBsAg …

Nov 4, 2025 · The CDC recommends using a 3-test panel to screen for HBV, which includes HBsAg, anti-HBs, and anti-HBc. The serologic hallmark of acute HBV infection is the detection …

It's the primary screening test to diagnose Hepatitis B infection and assess whether someone is currently infected with the virus. Here are the basic details of the Hepatitis B Surface Antigen …

What is the HBsAg Blood Test? Hepatitis B surface antigen (HBsAg) is a type of blood test used to check if a person has a hepatitis B viral infection. If specific antibodies are found, the person …