The 5 tests for eugenics should be taken early in the morning on an empty stomach. The main tests include toxoplasmosis, rubella virus, cytomegalovirus, herpes simplex virus and others: 1. Toxoplasmosis test: pregnant women infected with toxoplasmosis can be transmitted to the fetus through the placenta. Therefore, in the first trimester of pregnancy, toxoplasmosis examination should be conducted to avoid toxoplasmosis harm to the fetus; 2, rubella virus examination: rubella virus is the pathogen causing rubella, pregnant women infected with rubella virus is more harmful to the fetus, can lead to fetal congenital infection, serious cases can be miscarriage or stillbirth, the need for this eugenics examination; 3, cytomegalovirus examination: cytomegalovirus is an organism pathogenic virus The cytomegalovirus test: cytomegalovirus is an organismic pathogenic virus, which is more serious after infection in pregnant women, and is one of the important factors causing birth defects and irreversible damage to the fetus, and requires timely screening; 4, herpes simplex virus test: pregnant women who are infected with herpes simplex virus may infect the fetus through the placenta, which can cause miscarriage, premature birth, stillbirth or congenital malformation of the fetus in serious cases, and therefore requires timely screening during pregnancy; 5, other infections: usually refers to B19 Microvirus infection, if infected with B19 virus during pregnancy, can cause miscarriage, stillbirth, fetal edema syndrome, so it should be paid attention to.