Cortisol 2
Understanding Cortisol 2
What is Cortisol 2?
This test checks the level of cortisol hormone produced by the adrenal glands situated on the kidneys. It helps to maintain blood pressure, blood sugar, metabolism and responds to infections and stress. Excess of cortisol causes cushing syndrome while its deficiency causes addison's disease. Cushing syndrome is manifested by hypertension, diabetes, obesity, fragile skin, purple streaks on the abdomen, muscle weakness, osteoporosis. Symptoms of addison's disease are weight loss, muscle weakness, fatigue, low blood pressure and dark patches of skin.
Normal range of cortisol 6-23 mcg/dL. If not controlled abnormal levels may lead to fatal conditions including severe back pain, extreme hypotension and unconsciousness.
What is Cortisol 2 used for?
· To diagnose Cushing’s syndrome caused due to high cortisol levels
· To diagnose Addison’s disease
· To detect and diagnose conditions of the adrenal glands or the pituitary glands
What does Cortisol 2 measure?
The Cortisol Test measures the total amount of cortisol hormone in the blood. Cortisol is a hormone secreted by the adrenal glands that helps in the metabolism of carbohydrates, fats, and proteins. It also plays a regulatory role in maintaining the blood sugar levels, water balance of the body. Cortisol also helps the body maintain a healthy immune system. Most of the cortisol found in the body is bound to proteins, only a small portion remains free and metabolically active.
Level of cortisol hormone rises and falls during the course of a day following a diurnal pattern. Cortisol levels reach highest in the early morning, drop slowly throughout the day reaching its lowest around midnight, and again increases slowly through the night to reach its highest early next morning. This diurnal pattern of cortisol secretion is maintained by the hypothalamus in the brain and the pituitary gland located just below the brain. Fall in the blood cortisol levels stimulates the production of Corticotropin Releasing Hormone (CRH) from the hypothalamus. CRH stimulates the pituitary gland to secrete the Adrenocorticotropic Hormone (ACTH), which in turn stimulates the production of cortisol from the adrenal glands to increase cortisol levels in the blood. Cortisol levels are regulated by a feedback mechanism. When cortisol levels rise to the required levels, CRH secretion from hypothalamus is stopped. This in turn stops ACTH secretion from the pituitary gland, thereby stopping cortisol secretion from the adrenal glands. Symptoms associated with increased or decreased levels of cortisol hormone appear when this feedback mechanism is disturbed due to diseases or lifestyle.
Interpreting Cortisol 2 results
Interpretations
Normal cortisol levels may vary among individuals. Increased or decreased cortisol levels can be assessed only if the cortisol level in blood does not follow the diurnal pattern, as it should.
Cortisol levels may fall outside the normal range for the time of day due to diseases or due to lifestyle factors such as irregular sleeping times.
Causes of increased cortisol levels:
· Long term treatment with glucocorticosteroid hormones like prednisone, dexamethasone, etc.
· Pituitary tumors that increase ACTH production
· ACTH producing tumors in other parts of the body
· Adrenal tumors that increase cortisol secretion
· Congenital Adrenal Hyperplasia, a disease which causes excessive growth of adrenal gland cells
· Recent surgery, illness, injury, or sepsis
· CRH producing tumors in rare cases
Causes of decreased cortisol levels:
· Reduced cortisol production due to damage or diseases of the adrenal gland (primary adrenal insufficiency) like Addison’s disease
· Reduced ACTH production due to reduced activity of the pituitary gland or pituitary tumors (secondary adrenal insufficiency)
Answers to Patient Concerns & Frequently Asked Questions (FAQs) about Cortisol 2
Frequently Asked Questions about Cortisol 2
Q. What additional tests can be prescribed by your doctor in case of abnormal cortisol test results?
Q. What is Cushing’s syndrome?
Q. Is there any preparation required before the test?
Q. What are the symptoms associated with increased cortisol levels?
Q. What are the symptoms associated with decreased cortisol levels?
Q. What is Addison’s disease?
Q. Is there any risk associated with this test?
Q. What factors can affect the cortisol test results?
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