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  2. Adrenal insufficiency - Wikipedia

    en.wikipedia.org/wiki/Adrenal_insufficiency

    Cortisol levels typically peak in the morning; thus, low values indicate true adrenal insufficiency. [2] Urinary free cortisol can also be measured, but are not necessary for diagnosis. [2] To determine the origin of dysfunction, the ACTH stimulation test is the best initial test as it can differentiate between primary and secondary adrenal ...

  3. Cortisol - Wikipedia

    en.wikipedia.org/wiki/Cortisol

    Cortisol follows a circadian rhythm, and to accurately measure cortisol levels is best to test four times per day through saliva. An individual may have normal total cortisol but have a lower than normal level during a certain period of the day and a higher than normal level during a different period.

  4. Critical illness–related corticosteroid insufficiency - Wikipedia

    en.wikipedia.org/wiki/Critical_illness–related...

    Blood levels of dehydroepiandrosterone increase, and levels of dehydroepiandrosterone sulfate decrease in response to critical illness. [15] [16] [17] In the chronic phase of severe illness, cortisol levels decrease slowly and return to normal when the patient recovers. ACTH levels are however low, and CBG levels increase. [6]

  5. Addison's disease - Wikipedia

    en.wikipedia.org/wiki/Addison's_disease

    The long test uses 1 mg tetracosactide (intramuscular). Blood is taken 1, 4, 8, and 24 hours later. Normal plasma cortisol level should reach 1,000 nmol/L by 4 hours. In primary Addison's disease, the cortisol level is reduced at all stages, whereas in secondary corticoadrenal insufficiency, a delayed but normal response is seen.

  6. Glucocorticoid deficiency - Wikipedia

    en.wikipedia.org/wiki/Glucocorticoid_deficiency

    Symptoms of glucocorticoid deficiency (having not enough hormones that are classified as glucocorticoids, and mostly consisting of cortisol) vary depending on the underlying cause and severity—common signs and symptoms may include fatigue, weakness, weight loss, decreased appetite, low blood pressure, salt cravings, dizziness upon standing (orthostatic hypotension), muscle aches and pains ...

  7. ACTH stimulation test - Wikipedia

    en.wikipedia.org/wiki/ACTH_stimulation_test

    ACTH will be low [13] – usually below 35, but most people with secondary fall within the range limit. This is inappropriately normal for the low cortisol level. In some cases, the actual cause of low ACTH is from low CRH in the hypothalamus. It is possible to have separate ACTH and CRH impairment such as can happen in a head injury. [18]

  8. Adrenocorticotropic hormone deficiency - Wikipedia

    en.wikipedia.org/wiki/Adrenocorticotropic...

    Morning serum cortisol levels are typically the first step in the diagnostic work-up, but this test is only significant if values are extremely low, adrenal insufficiency is almost certain with values below 3 μg/dl, or it can be excluded with values in the upper half of the normal range. Cortisol levels above 19 g/dl almost always rule out ...

  9. Cortisone reductase deficiency - Wikipedia

    en.wikipedia.org/wiki/Cortisone_reductase_deficiency

    If levels of NADH are low, the enzyme catalyses the reverse reaction, from cortisol to cortisone, using NAD+ as a co-factor. Cortisol is a glucocorticoid that plays a variety of roles in many different biochemical pathways, including, but not limited to: gluconeogenesis, suppressing immune system responses and carbohydrate metabolism.