Cortisol, urine

Normal values:

The normal range is 10 to 100 mcg/24 h.

Note: mcg/24 h = micrograms per 24-hours

What abnormal results mean:

Increased levels of urine cortisol may indicate:

• ACTH-secreting tumor
• Cushing's syndrome
• pituitary tumor

Decreased levels of urine cortisol may indicate:

• Addison's disease
• hypopituitarism
• congenital adrenal hyperplasia

Additional conditions under which the test may be performed:

• Cushing's syndrome caused by adrenal tumor
• pregnancy (increases urinary cortisol)