Cortisol, plasma or serum
8:00 AM: 5–20 mcg/dL
[140–550 nmol/L]
(time-dependent)
8 hrs post 1 mg dexamethasone given at midnight: 0–5 mcg/dL;
30–60 min post 25 units Cosyntropin [intravenously: >20 mcg/dL]
SST, PPT (light green)
$$
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