title: Alpha1-antitrypsin concentration in amniotic fluid.
abstract: Concentrations of alpha1-antitrypsin were measured in 80 specimens of amniotic fluid collected at various stages of pregnancy. Levels remained relatively unchanged throughout gestation, with a median concentration of 10.0 mg/100 ml at 12-24 weeks, 18.7 mg/100 ml at 34-37 weeks, and 16.2 mg/100 ml, after the 37th week. In three instances where the infant developed RDS, the median concentration was 12.4 mg/100 ml.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011379:Prognosis; D012127:Respiratory Distress Syndrome, Newborn / Q000175:diagnosis*; D000515:alpha 1-Antitrypsin / Q000032:analysis
chemical_list: D000515:alpha 1-Antitrypsin