Plasma estradiol as a predictor of preterm labor.
Studies have shown a rapid rise of plasma estradiol-17beta in the maternal circulation before the occurrence of preterm labor. We have attempted to perform a linear regression analysis of the data from normal pregnancies and to set up a 95% upper prediction limit for the normal range of the estradiol level for each week of gestation. The prediction limits were reasonably good, with only five (13%) false negatives. False negatives tend to occur only in late pregnancy.
D004958:Estradiol / Q000097:blood*; D005189:False Positive Reactions; D005260:Female; D005865:Gestational Age; D006801:Humans; D007752:Obstetric Labor, Premature; D011247:Pregnancy; D012044:Regression Analysis
D004958:Estradiol