Hepatitis B surface antigen (HBsAg) Test

To test if my liver was okey, I was given a Hepatitis B surface antigen (HBsAq). Result: non reactive.

Hepatitis B surface antigen (HBsAg): A negative or non reactive result indicates that a person has never been exposed to the virus.

Or has recovered from acute hepatitis and has rid themselves of the virus (or has, at most, an occult infection).

A positive (or reactive) result indicates an active infection but does not indicate whether the virus can be passed to others.

Hepatitis B surface antigen (HBsAg) is a protein antigen produced by HBV. This antigen is the earliest indicator of acute hepatitis B and frequently identifies infected people before symptoms appear.

HBsAg disappears from the blood during the recovery period. In some people (particularly those infected as children or those with a weak immune system, such as those with AIDS), chronic infection with HBV may occur and HBsAg remains positive.

Sometimes, HBV goes into “hiding” in the liver and other cells and does not produce new viruses that can infect others, or produces them in such low amounts that they cannot be found in the blood.

People who have this form are said to be carriers. In other cases, the body continues to make viruses that can further infect the liver and can be spread to other people. In both these cases, HBsAg will be positive. The next test is helpful for distinguishing these two states.

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