<unk>  (also referred to as<unk> iotic fluid test or AFT), is a medical procedure used in prenatal diagnosis of genetic risk factors, in which a small amount of<unk> iotic fluid, which contains fetal tissues, is extracted from the<unk> ion or<unk> iotic sac surrounding a developing fetus, and the fetal DNA is examined for genetic abnormalities.<unk>  is not performed for every pregnancy, but is generally done when an increased risk of genetic defects in the fetus is indicated, by mother's age (over 35 years is common), family history of genetic defects, or other factors.
Amniocentesis
Fetal screening
Chorionic villus sampling
Obstetric ultrasonography
Cytogenetics
Genetic counseling
Karyotype
Genogram