The blood type of a baby is usually determined by genes. In order to determine the blood type of a baby, blood testing is usually performed after birth. However, during pregnancy, if there are special circumstances, parents need to know the blood type. But can the blood type of a child be detected during pregnancy?
During pregnancy, the blood type of the child can be detected. Amniotic fluid aspiration or umbilical cord blood can be drawn at 16-20 weeks of pregnancy to test the blood type of the fetus. At this time, the fetus is small and not easily punctured during aspiration, but it is generally not recommended as it carries certain risks to the fetus. Therefore, parents need to carefully consider and, unless there are special circumstances, blood testing can be done after the birth of the baby.
Amniotic membrane puncture is performed by extracting amniotic fluid for examination. When the fetus is moving in the amniotic fluid, 5-8 milliliters of amniotic fluid need to be extracted, which is not easy to cause uterine contractions. In the late stage of pregnancy, amniocentesis can also measure bilirubin and determine whether there is maternal fetal blood type incompatibility.
Pregnant women can check the fetal blood type to detect the presence of hemolytic disease, which is caused by blood type incompatibility between mother and baby. This can cause hemolytic diseases that pose a great threat to the fetus. After birth, there will be obvious jaundice, which is usually difficult to cure on its own. Therefore, it is necessary to take measures to prevent it. Women with a history of hemolytic disease may still have this condition during another pregnancy, so early examination is necessary.
