title: Amniotic fluid testosterone in prenatal sex determination.
abstract: Nonconjugated testosterone levels were measured by radioimmunoassay in samples of amniotic fluid from 60 normal pregnant women between 15 and 32 weeks of gestation. In the male fetuses, the mean +/- SEM amniotic fluid testosterone levels(328 +/- 25 pg/ml) were significantly higher (p less than 0,001) than the concentrations found in the female fetuses (121 +/- 9 pg/ml). The ranges were from 155 to 730 and from 46 to 240 pg/ml respectively, which shows an overlap area of the values between the sexes from 155 to 240 pg/ml. The results emphasize the potential interest of amniotic testosterone in the determination of fetal sex.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D005865:Gestational Age; D006801:Humans; D008297:Male; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011863:Radioimmunoassay; D012732:Sex Determination Analysis; D013739:Testosterone / Q000032:analysis*
chemical_list: D013739:Testosterone