title: Measurement of blood plasma cortisol by p-hydrozinobenzene sulfonic acid/H3PO4 reagent; a modified Porter--Silber reagent of increased sensitivity.
mesh_terms: D000328:Adult; D001557:Benzenesulfonates; D002940:Circadian Rhythm; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000097:blood*; D007202:Indicators and Reagents; D008297:Male; D008832:Microchemistry; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
chemical_list: D001557:Benzenesulfonates; D007202:Indicators and Reagents; D006854:Hydrocortisone