Hepatitis B 25 positive is not contagious, it means that the patient has been infected with hepatitis B virus in the past, but now it has been cleared. Hepatitis B 3-series test 25 positive refers to the existence of positive hepatitis B surface antibody and hepatitis B core antibody, suggesting that the patient has been infected with hepatitis B virus in the past, but due to the strong resistance of the body, the virus has been cleared from the body, and the positive hepatitis B core antibody is often accompanied by a lifelong, and generally will not be cleared. Hepatitis B 25 positive is recommended to carry out the test of hepatitis B virus replication number and liver function, if the number of hepatitis B virus replication is within the normal range and liver function is normal, there is no need to carry out special treatment. If you find abnormal results of Hepatitis B 3 test, you are advised to consult an infectious disease doctor in a regular hospital.