Performed by Dr. Kavya Jonnalagadda at Sree Charith Hospital
The Dexamethasone Suppression Test helps diagnose conditions related to excess cortisol production, such as Cushing's syndrome. It involves taking a small dose of dexamethasone medication and measuring cortisol levels in blood or urine samples. Dr. Kavya Jonnalagadda performs this test at Sree Charith Hospital to evaluate adrenal and pituitary function.
We believe in honest, upfront disclosure so you can make an informed decision.
A step-by-step look at what happens during this procedure.
A blood or urine sample is collected to measure your cortisol levels before taking any medication.
You take a prescribed dose of dexamethasone, usually at night. This medication normally suppresses cortisol production in healthy individuals.
Blood or urine is collected the next morning to see how your body responded to the medication.
In some cases, a longer test over two or three days with higher doses may be needed for more detailed information.
Your doctor compares cortisol levels before and after dexamethasone to determine if your adrenal glands and pituitary are functioning normally.
A structured, patient-first approach from first consultation to full recovery.
Dr. Kavya Jonnalagadda reviews your symptoms, medical history, and any prior test results to determine if this test is appropriate for you.
You receive detailed written and verbal guidance on medication timing, what to avoid, and when to provide samples.
Blood draws are performed by trained phlebotomists at Sree Charith Hospital with attention to comfort and accurate timing.
Results are explained in a follow-up consultation, along with recommended next steps based on your individual findings.
What to expect at each stage of your recovery journey.
Most people resume normal activities right after each blood draw. Any side effects from dexamethasone typically resolve within a day.
If you experience temporary symptoms like mild stomach upset or sleep changes, these usually clear within 24 to 48 hours after the test is complete.
Your doctor will discuss results and any further testing or treatment needed based on your individual findings. Additional appointments depend on the diagnosis.
The test helps identify whether cortisol levels are elevated and where the problem originates, guiding appropriate treatment decisions.
This is a diagnostic test only. It does not treat any underlying condition but provides information needed to plan therapy.
Abnormal results often lead to imaging studies or additional hormone tests to pinpoint the exact cause of excess cortisol.
If cortisol suppresses normally, it helps rule out certain hormone disorders and may redirect the search for other causes of symptoms.
The right choice depends on your diagnosis, risks and circumstances — discussed with you at your consultation.
This test measures cortisol excreted in urine over a full day. It may be used instead of or alongside the suppression test to assess cortisol production.
Saliva samples collected at night can detect elevated cortisol. This option is less invasive and can be done at home, though it may not provide the same detail as suppression testing.
In some cases, CT or MRI scans of the adrenal or pituitary glands are performed if there is strong clinical suspicion, though biochemical confirmation is usually needed first.
Let's clear up some of the most common myths about dexamethasone suppression test.
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