The premarital medical examination includes physical examination and laboratory examination. The physical examination starts with general examination, such as height, weight, blood pressure, heart rate and auscultation of heart and lung, palpation of liver and spleen, which mainly look at the health condition of the patient and whether there are any relevant factors that affect the future marriage. In addition, male and female genital examinations are done to see if there are any congenital diseases. For women, vaginal secretions are examined for gonococcal infection and Chlamydia trachomatis infection. In men, a routine semen examination is done to see if there is fertility. In addition, both partners should have routine blood tests, urine tests, and blood group tests, mainly to see if there are any blood group disorders.