33 weeks refers to 33 weeks of pregnancy, if there is a missed amniotic fluid test or suspected fetal abnormality in the 33rd week of pregnancy, then it is necessary to do cord blood puncture, if there are no special circumstances, usually can not be done.
33 weeks pregnant has reached the late stage of pregnancy, umbilical cord blood puncture is mainly to clarify the fetus in the abdomen with or without chromosomal abnormalities, but not all 33 weeks pregnant women need to do this test. Usually, if there is a missed amniotic fluid test, suspected fetal abnormality, or high risk of Down’s syndrome at 33 weeks of pregnancy, it is necessary to have a cord blood puncture test.
However, if all the results of the labor and delivery test at 33 weeks of pregnancy are normal and on time, cord blood puncture test is usually not necessary. There are some differences in the prenatal checkups that need to be done for different time periods of pregnancy.
To summarize, it is recommended that pregnant women in their 33rd week of pregnancy go to the hospital on time for relevant checkups and closely monitor the growth and development of the fetus.