Amniotic fluid chromosomal analysis is a diagnostic test performed during pregnancy to evaluate the fetus's genetic health. It involves collecting a sample of amniotic fluid, which surrounds the fetus, through a procedure called amniocentesis. The fluid contains fetal cells, which are then cultured and analyzed for chromosomal abnormalities. This test can detect conditions like Down syndrome, trisomy 18, and other genetic disorders with high accuracy. Unlike screening tests, amniocentesis provides definitive results. The procedure is typically done between 15 and 20 weeks of pregnancy. Although it carries a small risk of miscarriage, it offers valuable information for parents and healthcare providers.