For the food industry, public places, drinking water industry "health certificate", completely cancel the detection of hepatitis B markers, only need to apply for a certificate, can be used in the above industries. The examination items include: general physical examination, chest X-ray, detection of intestinal pathogenic bacteria and alanine aminotransferase; If alanine aminotransferase exceeds the standard, a certificate shall be issued after re-examination or medical certificate is provided to exclude patients with hepatitis A and hepatitis E..