Lab
Serum Cortisol
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Serum Cortisol
, Serum Cortisol Measurement
Interpretation
Normal
Cortisol 8 am: 4-19 mcg/dl
Consider dynamic testing if early morning testing<13 mcg/dl
Cortisol 4 pm: 2-15 mcg/dl
Interpretation
Increased
Cushing's Disease
Ectopic ACTH production
Small-cell
Lung Cancer
Chronic Renal Failure
Pregnancy
Interpretation
Decreased
Primary or Secondary adrenocortical insufficiency
Anterior pituitary dysfunction
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