Amniocentesis to detect chromosomal abnormalities can be done as early as: (A) 14th week of gestation, (B) 18th week of gestation, (C) 22nd week of gestation, (D) 26th week of gestation
Answer is A. Amniocentesis: examination of a sample of amniotic fluid makes possible the prenatal diagnosis of chromosomal anomalies and certain metabolic defects; the procedure can be used as early as 14th week of pregnancy when abortion of affected fetus is still feasible.