Is hepatitis B two pairs of semi surface antigen positive hepatitis B

Positive surface antigen in two and a half pairs of hepatitis B tests usually indicates the presence of hepatitis B virus infection, but it needs to be combined with other indicators to determine whether it is hepatitis B. Two and a half pairs of hepatitis B tests mainly include five indicators: surface antigen, surface antibody, e antigen, e antibody and core antibody. Positive surface antigen indicates the presence of hepatitis B virus in the body, which may be caused by acute infection, chronic carrier or chronic hepatitis B. It is suggested that further examination of liver function, quantitative analysis of hepatitis B virus DNA and liver ultrasound should be carried out for definite diagnosis.

If only the surface antigen is positive and other indicators are negative, it may be that hepatitis B virus is carried. At this time, the virus replication is not active, the infectivity is low, and the liver function is more normal. Some people may be in a lifelong carrier state without treatment, but regular monitoring of liver function and viral load is necessary. If it is accompanied by positive e antigen or high DNA load of hepatitis B virus, it indicates that the virus is actively replicating, infectious, and may develop into chronic hepatitis B. It is necessary to decide whether to start antiviral treatment according to the degree of liver function damage.

In a few cases, positive surface antigen may be caused by false positive test, such as recent vaccination of hepatitis B vaccine, presence of rheumatoid factor interference or cross reaction of other viral infections. Repeated testing or combined with hepatitis B virus DNA results is required to exclude false positive. Pregnant women with positive surface antigen may also experience vertical transmission from mother to child, and viral load monitoring and blocking measures should be taken during pregnancy. Regardless of their state, surface antigen positive individuals should avoid drinking alcohol, maintain regular sleep patterns, and reduce liver burden. Family members should be vaccinated against hepatitis B and avoid sharing razors, toothbrushes and other items that may contact blood. Patients with chronic hepatitis B should take antiviral drugs such as entecavir tablets, tenofovir fumarate dipivurate tablets for a long time according to the doctor's advice, and should not stop taking the drugs. Re check liver function, alpha fetoprotein, and liver imaging every 3-6 months to detect early signs of liver fibrosis or liver cancer.