Amniocentesis wata hanya ce ta likitanci inda ake fitar da karamin samfurin ruwan amniotic, ruwan da ke kewaye da tayin da ke tasowa daga mahaifar ta hanyar amfani da allura. Ana bincikar wannan ruwan don rashin daidaituwa na kwayoyin halitta da sauran yanayin kiwon lafiya waɗanda zasu iya shafar lafiyar tayin. Ana yin Amniocentesis yawanci a cikin uku na biyu na ciki kuma ana amfani dashi don tantance yanayi kamar Down syndrome, cystic fibrosis, da spina bifida.