A procedure for first-trimester prenatal diagnosis. Abbreviated CVS. CVS may be done between the eighth and tenth weeks of pregnancy. The aim is to diagnose severe abnormalities that are present in the fetus. Tissue is withdrawn from the villi of the chorion, a part of the placenta, and then prepared for diagnostic analysis.

(kor-ee-on-ik vill-us) A technique for diagnosing genetic and congenital defects while the fetus is in the uterus. A small sample of the fetal portion of the placenta is removed and analyzed.

A prenatal test that examines the tissue that attaches the fetus to the wall of the uterus. If indicated, usually performed between 10–12 weeks of pregnancy to detect certain birth defects.

Procedure used for prenatal genetic testing in which a small piece of the chorion (the outer layer of the placenta) is removed from a pregnant woman. A catheter is inserted through the vagina and cerv [..]

A procedure that involves testing cells taken from the placenta in the first trimester.

A procedure used in prenatal diagnosis to look at the chromosomes of the developing fetus. A sample is removed from the chorion, which is part of the placenta and contains cells from the fetus. This s [..]

A type of prenatal testing that can be done as early as the 10th week of pregnancy. CVS can detect SMA in a fetus, but is associated with a risk of miscarriage that may be as high as 1 in 100. 

If necessary this test is performed between 10 and 12 weeks of pregnancy and can indicate the same chromosomal abnormalities and genetic disorders as amniocentesis can. It also can detect the baby [..]

a procedure for obtaining a small sample of  tissue from the placenta (chorionic villi) for the purpose of prenatal diagnosis of genetic disorders. CVS can be performed between 9 to 12 weeks of pregna [..]

A method for Diagnosis of Fetal Diseases by sampling the Cells of the placental Chorionic Villi for DNA analysis, presence of Bacteria, concentration of metabolites, etc. The advantage over Amniocente [..]

A procedure in which a sample od chorionic villus tissue of a developing fetus is examined for chromosomal abnormalities.

Genetic testing of a tiny tissue sample from outside the sac where the fetus develops.

A prenatal test in which cells surrounding an embryo are removed in order to examine the chromosomes. 

A medical procedure that extracts a portion of the outermost membrane surrounding the fetus to enable genetic and biochemical analysis.

(medicine) A form or prenatal diagnosis in which part of the placental tissue is tested for genetic abnormalities

A procedure in which a small sample of cells are taken from the placenta through a small catheter placed up through the vagina and the cervix. This is done earlier in pregnancy than amniocentesis and [..]