A. Serum cortisol levels (μg/dL) in biochemically adrenal-cortisol insufficient and sufficient inpatients before (B, baseline) and 30 and 60 minutes (min) after cortrosyn (250 μg) injection. Presented as Mean ± SD, ***p<.001 (t-test for each time point), B. Physician preference for cortisol measurement timepoints during cortrosyn stimulation tests . Serum cortisol was measured at baseline after which cortrosyn 250 μg was injected and serum cortisol re-measured at times indicated. Black bars, adrenal-cortisol sufficient inpatients, white bars, adrenal-cortisol insufficient inpatients