Variability in cortisol level assay methods.
D001667:Binding, Competitive; D003907:Dexamethasone; D006801:Humans; D006854:Hydrocortisone / Q000097:blood*; D011485:Protein Binding; D011863:Radioimmunoassay / Q000592:standards
D003907:Dexamethasone; D006854:Hydrocortisone