Figure 2From: Plasma, salivary and urinary cortisol levels following physiological and stress doses of hydrocortisone in normal volunteers Plasma free, salivary and urine cortisol concentrations after oral and intravenous hydrocortisone. Individual free cortisol levels in the plasma (A), saliva (C) and urine (E), and mean (± SEM) free cortisol levels in the plasma (B), saliva (D) and urine (F): endogenous (blue circle) levels and after oral (green triangle) or intravenous (red square) hydrocortisone. The arrows in Figure 2 C indicate two extreme salivary cortisol outliers 1 h after oral hydrocortisone (596 and 2385 nmol/L).Back to article page