title: Identification and measurement by gas chromatography-mass spectrometry of norethindrone and metabolites in human urine and blood.
mesh_terms: D002845:Chromatography; D002849:Chromatography, Gas; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D013058:Mass Spectrometry; D009640:Norethindrone / Q000097:blood / Q000378:metabolism* / Q000652:urine; D012824:Silicic Acid
chemical_list: D012824:Silicic Acid; D009640:Norethindrone