title: Screening for detecting twin pregnancy.
abstract: Estimation of HPL during the twenty-ninths to the thirtieth week of pregnancy is a simple and safe method for detecting twins. Nine out of 10 pregnant women have a value below 5.0 mug per milliliter, which excludes the suspicion of twins. In the remaining women with higher values the diagnosis can be confirmed or excluded by ultrasound or x-ray.
mesh_terms: D005260:Female; D006801:Humans; D011247:Pregnancy; D011258:Pregnancy Tests; D011272:Pregnancy, Multiple; D014427:Twins