![]() ![]() The fluid can be sent to the genetics lab for study of the baby's chromosomes in these cells. ![]() The baby sheds cells into the amniotic fluid. In this test, a sample of the amniotic fluid is taken from the uterus. This is usually done between 11 and 14 weeks of pregnancy. The chorionic villus cells can be sent to the genetics lab for chromosome studies. The placenta contains the same genetic material as the baby. This involves taking a small piece of tissue from the developing placenta. One of two procedures can be performed to test prenatally for Turner syndrome: If Turner syndrome is suspected before birth (prenatally), your pregnancy and childbirth specialist (obstetrician) may ask if you're interested in additional tests to make a diagnosis before your baby is born. However, doing a karyotype during pregnancy or after delivery is recommended to confirm the diagnosis. Prenatal screening tests that evaluate the baby's DNA in the mother's blood (prenatal cell-free fetal DNA screening or noninvasive prenatal screening) may also indicate an increased risk of Turner syndrome. Certain features on an ultrasound image may raise suspicion that your baby has Turner syndrome or another genetic condition affecting development in the womb. A diagnosis is sometimes made during fetal development. ![]()
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