Measurement of salivary cortisol level for the diagnosis of critical illness-related corticosteroid insufficiency in children.

Objective:To compare serum total, serum free and salivary cortisol in critically ill children.Design:Prospective observational cohort study.Setting:Tertiary pediatric critical care unit at Ronald McDonald Children’s Hospital at Loyola University Medical Center.Patients:We enrolled 59 patients (4 wee