Keywords: 11-DHC; 11-dehydrocorticosterone; 11β-HSD1; 11β-hydroxysteroid dehydrogenase; 4; -(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES); CBG; Corticosteroid binding globulin; H6PD; Hexose-6-phosphate dehydrogenase; SDR; Steroid displacement reagent;