Dynamics of salivary cortisol in chronic kidney disease patients at stages 1 through 4

Abstract

False positive responses to 1 mg DST were associated with GFR < 90 ml/min/1·73 m(2) . This could not be ascribed to either defects in dexamethasone absorption or CBG concentrations. Higher dexamethasone doses were necessary to achieve adequate HPA suppression. Salivary cortisol was useful to assess circadian cortisol levels and feed-back regulation in CKD.