title: Circulating levels of pregnancy-specific beta1-glycoprotein and human placental lactogen in the third trimester of pregnancy: their relationship to parity, birth weight, and placental weight.
abstract: Circulating levels of pregnancy-specific beta1-glycoprotein (SP1) and human placental lactogen (HPL) were measured in 153 normal subjects during the third trimester of pregnancy. The levels of SP1 and HPL showed a skewed distribution and rose progressively to reach a plateau by the 36th week. The normal range was calculated by ranking the data and division into centiles as well as by logarithmic transformation of the values. A low but significant correlation was observed between SP1 and HPL levels, SP1 and birth weight. There was also a correlation between HPL levels and placental weight.
mesh_terms: D001724:Birth Weight; D005260:Female; D006023:Glycoproteins / Q000097:blood*; D006801:Humans; D009929:Organ Size; D010298:Parity; D010920:Placenta / Q000032:analysis; D010928:Placental Lactogen / Q000097:blood*; D011247:Pregnancy; D011263:Pregnancy Trimester, Third
chemical_list: D006023:Glycoproteins; D010928:Placental Lactogen