The purpose of the test is to check whether the body is infected with Toxoplasma gondii, rubella virus, cytomegalovirus, herpes simplex virus type I and type II. If the IgM antibody is positive, it indicates that the pregnant woman has had a viral infection in the last 1-2 months, when she is in the active phase of the infection, but usually has no symptoms to show. The possibility of a few false positives in the test results cannot be ruled out, and the test can be repeated after a period of time. If the IgG antibodies are positive, it means that the infection is the first one and the possibility of fetal malformation or miscarriage is high, especially in early pregnancy, so it is usually recommended to terminate the pregnancy. If IgG antibodies are negative, the problem is usually minor and the next inquiry can be made to a specialist in the relevant department, such as the genetics department. If the IgM antibody is negative and the IgG antibody is positive, it means that there has been an infection and the organism has developed antibodies. At this time, pregnancy will have no effect on the fetus and the next eugenics test can be performed. The eugenics test is one of the important indicators of eugenics screening, which can assess the impact of primary intrauterine infections on fetal growth and development, and is recommended for women during the preparation period and pregnancy. The eugenics five tests can be performed between 3-6 months before a woman’s pregnancy and are also needed before delivery. It is recommended to choose 3-5 days after menstrual cleansing to reduce interference with the test results. It is recommended to choose 3-5 days after menstruation to reduce interference with the test results. You should not eat or drink after 12:00 p.m. the night before the test to ensure that you are fasting before the test. On the day of the examination, blood will be drawn. It is recommended to wear loose clothing, especially the cuffs should not be too tight, and if you feel sick, you should explain to the doctor in advance.