title: Solid-phase extraction as an alternative to dichloromethane in analysis of urine free cortisol.
authors.forename: J
authors.initials: J
authors.lastname: Butler
mesh_terms: D002138:Calibration; D006801:Humans; D006854:Hydrocortisone / Q000302:isolation & purification / Q000652:urine*; D007118:Immunoassay / Q000379:methods; D007202:Indicators and Reagents; D008752:Methylene Chloride; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D007202:Indicators and Reagents; D008752:Methylene Chloride; D006854:Hydrocortisone