Confirmatory Serum Testing for Secondary Adrenal Insufficiency
Test | Result |
|---|---|
ACTH | Low (< 5 pg/mL [1.10 pmol/L]) |
Cortisol | Low (< 5 mcg/dL [138 nmol/L]) |
ACTH stimulation test | Normal or subnormal |
Prolonged (24-hour) ACTH stimulation test | Cortisol should continue to rise for 24 hours |
ACTH = adrenocorticotropic hormone. | |
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