title: Human placental lactogen, estradiol-17beta, and progesterone levels in the third trimester and their respective values for detecting twin pregnancy.
abstract: Plasma levels of HPL, P, and E2 was serially measured between weeks 30 to 36 in simplex and duplex pregnancies. Levels of both HPL and P were significantly higher in duplex than in simplex pregnancies. However, this was not the case for E2. There was a significant correlation between HPL and P levels. It is indicated that measurement of plasma P levels, as those of HPL levels, but not E2 levels is of value for detecting twin pregnancy.
mesh_terms: D000328:Adult; D004958:Estradiol / Q000097:blood*; D005260:Female; D006801:Humans; D010928:Placental Lactogen / Q000097:blood*; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D011272:Pregnancy, Multiple; D011374:Progesterone / Q000097:blood*; D014427:Twins
chemical_list: D011374:Progesterone; D004958:Estradiol; D010928:Placental Lactogen