Optical density differencing: a new method for the direct measurement of bilirubin in liquor amnii.
D000653:Amniotic Fluid / Q000032:analysis*; D001663:Bilirubin / Q000032:analysis*; D005260:Female; D006452:Hemoglobinometry; D006801:Humans; D008433:Mathematics; D008706:Methemoglobin / Q000032:analysis; D008722:Methods; D011247:Pregnancy; D013053:Spectrophotometry
D008706:Methemoglobin; D001663:Bilirubin