Hepatitis B refers to Hepatitis B. Hepatitis B virus infection can usually be detected in about 6 weeks. Hepatitis B virus is generally transmitted through blood, mother-to-child, and sexual contact, and can be detected about 6 weeks after infection with the hepatitis B virus. The main reason for this is that if the test is conducted too soon, the viral antigen in the patient’s body has not yet been formed, and thus the presence of the hepatitis B virus may not be detected. In the early stages of hepatitis B virus infection, patients may experience symptoms such as dizziness, fatigue and loss of appetite. As the disease worsens, patients will gradually develop typical symptoms such as liver palms, spider nevi, enlarged liver and spleen, and impaired liver function. When patients have high-risk behaviors for hepatitis B infection, it is recommended that they go to the hospital for timely examination and treatment.