title: The determination of a reference range for urinary oestrogen excretion in late pregnancy.
abstract: A reference range for urinary oestrogen excretion between 28 and 40 weeks has been produced by analysis of 18 870 estimations. The data were transformed logarithmically to give a Gaussian distribution on which parametric analysis was performed: non-parametric analysis was carried out on the untransformed data: the results of both analyses were compatible. Multiple pregnancies tended to have levels above the 50th centile, light-for-dates fetuses below the 50th centile. Antepartum haemorrhage showed no difference from the general reference range. Intrauterine death was preceded by a level below the 5th centile if the estimation was carried out less than one week before the fetus died.
mesh_terms: D004967:Estrogens / Q000652:urine*; D005260:Female; D005313:Fetal Death / Q000175:diagnosis; D005317:Fetal Growth Retardation / Q000175:diagnosis; D005865:Gestational Age; D006801:Humans; D010925:Placental Function Tests; D011247:Pregnancy; D011248:Pregnancy Complications / Q000652:urine*; D011263:Pregnancy Trimester, Third; D011272:Pregnancy, Multiple; D012016:Reference Values; D014592:Uterine Hemorrhage / Q000652:urine
chemical_list: D004967:Estrogens