title: Estimation of gestational age by last menstrual period, by ultrasound scan and by SP1 concentration: comparisons with date of delivery.
abstract: The date of delivery in 62 normal pregnant women was predicted by last menstrual period, by ultrasound scan and by the serum concentration of Schwangerschaftsprotein 1 (SP1). It was found that SP1 concentration in the first trimester gave as reliable an indication of when labour would occur as did the last menstrual period or ultrasound scan.
mesh_terms: D000328:Adult; D005260:Female; D005865:Gestational Age; D006801:Humans; D007745:Labor Onset; D008598:Menstruation; D011247:Pregnancy; D011257:Pregnancy Proteins / Q000032:analysis*; D011261:Pregnancy Trimester, First; D011268:Pregnancy-Specific beta 1-Glycoproteins / Q000032:analysis*; D014463:Ultrasonography
chemical_list: D011257:Pregnancy Proteins; D011268:Pregnancy-Specific beta 1-Glycoproteins