A positive antibody means that it is normal and there is no need to worry too much. On the contrary, if the antibody is negative, you should be alert for the occurrence of miscarriage. It is a very important antibody because it is present in the serum of the pregnant woman and it can close the toxic effects of the lymphocytes in the pregnant woman’s body on the embryo, and it can prevent the immune system of the pregnant woman from attacking the embryo. If a pregnant woman is negative for closed antibodies, her body will strongly reject the fetus, resulting in recurrent miscarriage or fetal death, and if she develops gestational hypertension in late pregnancy, this greatly increases the risk of delivery. Therefore, for women who are closed antibody negative, they can be given gammaglobulin injections to produce antibodies under the guidance of a specialist, and for women who have repeated spontaneous abortions, it is very important to have closed antibody testing.