Hepatitis B high risk can be ruled out in about two months. Hepatitis B high risk is also known as the window period for hepatitis B infection. It is the period of time, usually about two months, after close contact with a hepatitis B virus carrier and infection by his or her blood or body fluids. The two-month period is mainly determined by the time after the hepatitis B virus that enters the body stimulates the body to produce an immune response, and if the body does not have hepatitis B surface antibodies it will produce hepatitis B surface antigen. After the occurrence of high-risk behavior, you can pass the hepatitis B triple system test in about two months to know the situation of hepatitis B virus infection. Therefore, if you suspect that you are infected with hepatitis B, it is best to consult a professional doctor to complete the examination and get a clear diagnosis and treatment as soon as possible.