How is the quantitative measurement of hepatitis B surface antigen compared?

In fact, the quantification of hepatitis B surface antigen will have a reference range after testing. The quantification of hepatitis B surface antigen can directly determine whether it is positive or negative, which also indicates whether the hepatitis B virus exists in the body being tested. Hepatitis B surface antigen can exist in the patient's blood, saliva, and sweat, so you must pay attention to your daily behavior.

How to quantify hepatitis B surface antigen

Strengthening the quantitative monitoring of hepatitis B surface antigen not only helps predict the efficacy of hepatitis B treatment, allowing doctors to adjust treatment plans in a timely manner based on the results of quantitative hepatitis B surface antigen testing and strive to optimize the effect of hepatitis B treatment, but also increases patients' confidence in hepatitis B treatment and enables patients to recover sooner.

Is HBV contagious?

It is the outer shell protein of the hepatitis B virus and is not contagious itself, but its appearance is often accompanied by the presence of hepatitis B virus, so it is a sign of infection with the hepatitis B virus. Quantitative testing of hepatitis B surface antigen is to determine the specific value of the antigen and then determine whether it is positive or negative. It can exist in the patient's blood, saliva, milk, sweat, tears, nasopharyngeal secretions, semen and vaginal secretions. A positive result can be detected in the serum 2 to 6 months after infection with hepatitis B virus, when alanine aminotransferase increases 2 to 8 weeks before the onset. Most patients with acute hepatitis B can turn negative in the early stage of the disease, while this indicator can remain positive in patients with chronic hepatitis B.

Normal value of hepatitis B surface antigen quantitative:

Reverse Passive Hemagglutination (RPHA): < 1:8.

Immunoadhesion hemagglutination assay (IAHA): < 1:8.

Enzyme-linked immunosorbent assay (ELISA): negative.

Radioimmunoassay (RIA): negative.

How to read the quantitative hepatitis B surface antigen:

A positive hepatitis B surface antigen test indicates active chronic or migratory hepatitis or a chronic virus carrier.