title: Direct determination of steroidal sulfates.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D006728:Hormones / Q000032:analysis; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods; D011247:Pregnancy; D013055:Spectrophotometry, Infrared / Q000379:methods; D013256:Steroids / Q000032:analysis*; D013463:Sulfuric Acid Esters / Q000032:analysis*; D013464:Sulfuric Acids / Q000032:analysis*
chemical_list: D006728:Hormones; D013256:Steroids; D013463:Sulfuric Acid Esters; D013464:Sulfuric Acids