Health certificates are not tested for AIDS. The health certificate is intended for workers in the food industry as well as in the pharmaceutical, water and beauty industries. The health certificate usually includes frontal and lateral radiographs of the chest to check for the presence of tuberculosis. In addition, blood is drawn to test the liver function of the glutathione transaminase, if the glutathione transaminase is more than twice as high, to check the hepatitis A antibody, hepatitis B five, hepatitis C antibody and hepatitis E antibody. At the same time, the health certificate should be carried out stool culture to check for intestinal infectious diseases, such as culture of Vibrio cholerae, S. typhi and S. paratyphi. The health certificate is checked for internal medicine and surgery. Internal medicine should ask for family genetic history and check for major diseases; surgery should check for spine, limbs and joints.