title: Atmospheric pressure ionization (API) mass spectrometry. Solvent-mediated ionization of samples introduced in solution and in a liquid chromatograph effluent stream.
mesh_terms: D001274:Atmospheric Pressure; D002845:Chromatography / Q000379:methods*; D003201:Computers; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007664:Ketosteroids / Q000652:urine; D013058:Mass Spectrometry / Q000379:methods*; D011374:Progesterone / Q000652:urine; D012997:Solvents; D014556:Urine / Q000032:analysis
chemical_list: D007477:Ions; D007664:Ketosteroids; D012997:Solvents; D011374:Progesterone