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What tests can screen for Cushing’s syndrome?

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Cushing's syndrome is when your body has too much stress hormone cortisol. Tests your doctor may order include:

  • 24-hour urinary free cortisol test. This collects your pee for 24 hours to check how much cortisol is in it.
  • Dexamethasone suppression test . You take a low-dose steroid pill at 11:00 p.m. and then take a blood test in the morning to see how much cortisol your body still makes.
  • Late-night salivary cortisol level. This test measures cortisol in your saliva at night.

SOURCES:

Massachusetts General Hospital: "Cushing's Syndrome."

Medscape: "Cushing Syndrome."

National Endocrine and Metabolic Diseases Information Services: "Cushing's Disease."

National Institute of Neurological Disorders and Stroke: "NINDS Cushing's Syndrome Information Page."

Urology Care Foundation: "Cushing's Syndrome."

Reviewed by Arefa Cassoobhoy on July 6, 2020

SOURCES:

Massachusetts General Hospital: "Cushing's Syndrome."

Medscape: "Cushing Syndrome."

National Endocrine and Metabolic Diseases Information Services: "Cushing's Disease."

National Institute of Neurological Disorders and Stroke: "NINDS Cushing's Syndrome Information Page."

Urology Care Foundation: "Cushing's Syndrome."

Reviewed by Arefa Cassoobhoy on July 6, 2020

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How will my doctor decide on the treatment for Cushing's syndrome?

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