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Doctor insights on: Cortisol Suppression Test

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43 yo f, afternoon cortisol high, cortisol suppression test high, CT of adrenal glands normal. Other causes of elevated cortisol?

43 yo f, afternoon cortisol high, cortisol suppression test high, CT of adrenal glands normal. Other causes of elevated cortisol?

Pituitary : Cortisol is under control of the pituitary. You need to know if the source is coming from the pituitary. We call this Cushing disease. See a specialist to work this up. Cushing's is one of the most difficult diagnosis to make, even for a specialist. ...Read more

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What are normal ranges for cortisol dex suppression test?

What are normal ranges for cortisol dex suppression test?

Less than 2mcg/dL: The overnight dex suppression test involves taking 1 mg of Dexamethasone at 9 pm. The morning cortisol drawn at 7-8 am should be less than 2 mcg/ dl. ...Read more

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Cortisol test done 1mg suppression over night. it said normal range should be 6.2 to 19.4 my result was 1.0 ug/ dl said abnormal what does that mean ?

Cortisol test done 1mg suppression over night. it said normal range should be 6.2 to 19.4 my result was 1.0 ug/ dl said abnormal what does that mean ?

Normal: The normal range is for someone who was not given dexamethasone. With dexamethasone the morning cortisol level should be under 3 mcg/dl. Your result of 1.0 is the correct result and shows that your adrenal glands are not over producing cortisol. ...Read more

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My dr told me I didn't have to fast before the DEXA suppression test for cortisol levels. I read online that u should fast, tho. which I correct?

My dr told me I didn't have to fast before the DEXA suppression test for cortisol levels. I read online that u should fast, tho. which I correct?

Fasting not required: Hi. Fasting is NOT required for a dexamethasone suppression test (DST). However, you MUST be off this rectal and topical glucocorticoids you've bee using! The longer off them, the better, before doing the DST. Good luck! ...Read more

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Is it normal after taking the overnight dexamethasone suppression test to have your cortisol level be <0.8 mcg/dl, also did not fast. ?

Is it normal after taking the overnight dexamethasone suppression test to have your cortisol level be <0.8 mcg/dl, also did not fast. 
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Dex suppression test: 41 F from UT asks: Is it normal after taking overnight sex to have cortisol < 0.8 msg/dl and did not fast. ANS: To decide it it is normal I need to know a few more things. 1. What was the dose or Dex? 2. Why was it done? 3. What are the normal ranges for that lab? 4. What other meds were you taking? So can consult with me so i can get more details and answer better. But probably OK. ...Read more

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Age 21 male 8 am cortisol is 4.91 low whatcit represent while my face has puffiness loks like moon face is acth suppression and synachten test reqd ?

Age 21 male 8 am cortisol is 4.91 low whatcit represent while my face has puffiness loks like moon face is acth  suppression and synachten test reqd ?

CORTISOL TEST: 21M of unknown ethnicity with no past medical Hx or location notes AM Cortisol is 4.9.low whatnot represent while my face has puffiness looks like moon face is acth suppression and synacthen test required? ANS: No first you need a good history and physical exam and bring in old pictures of your face as far back as you can. Ask Dr. who ordered test what the next step should be based on his findings ...Read more

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Cortisol saliva test very high, but DEXA suppression test normal. have had fatigue, low BP, weakness for years. which test to believe, and what now?

Cortisol saliva test very high, but DEXA suppression test normal. have had fatigue, low BP, weakness for years. which test to believe, and what now?

Cushing's: There are several ways to screen for Cushings: 24 hr urine cortisol, overnight dex suppression, and midnight salivary cortisol. All would be altered if you took a steroid suppository. All need confirmation from other tests. Intermittant steroid use can cause symptoms of Cushing's, but no reason to think there is a tumor if you are taking steroids. You may need to see an Endocrinologist. ...Read more

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Confused about dexamethasone suppression test. how can taking a steroid LOWER cortisol levels? having this to check for cushing's.

Confused about dexamethasone suppression test. how can taking a steroid LOWER cortisol levels? having this to check for cushing's.

Cortisol: If your adrenal glands are working correctly a dose of dexamethasone would lower the cortisol levels. Have you had cortisol levels drawn without dexamethasone? Do you have symptoms related to cortisol? ...Read more

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43 yro f tested high for cortisol in afternoon 28 ug/dl After suppression test am cortisol 3.7 and ACTH 2.0 CT showed adrenals normal. Ideas?

43 yro f tested high for cortisol in afternoon 28 ug/dl After suppression test am cortisol 3.7 and ACTH 2.0 CT showed adrenals normal. Ideas?

Cushing's diagnosis: Presumably you have symptoms (weight gain, skin changes, diabetes, etc). Sounds like you had screening tests (?overnight dex) but these tests do not establish the diagnosis. False positives occur with depression, obesity, alcohol consumption. You really need to see an Endocrinologist to get this worked up. If it is Cushing's, 70% is in the pituitary, not the adrenal. ...Read more

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My a.M. Cortisol serum is routinely 35+ (range 9-21), but low dose suppression test was normal. Tsh is slightly high, T3 (liothyronine) is elevated too. Causes?

My a.M. Cortisol serum is routinely 35+ (range 9-21), but low dose suppression test was normal. Tsh is slightly high, T3 (liothyronine) is elevated too. Causes?

Oral contraceptive: The most likely explanation for these findings is being on an oral contraceptive (yaz). This raises the cortisol binding protein level, making the total cortisol level look high, but the biologically active cortisol is normal. The same thing happens for thyroid hormone, including T3 (liothyronine) levels. If you have hashimotos and your TSH is high, you have mild hypothyroidism. ...Read more