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Catecholamines Fract 24hr Urine
See below: A 24 hr urine catecholamine test is done to help diagnose and susequently resect a tumor in the adrenal glands called a pheochromocytoma which results in BP elevation to very high levels periodically. It measures the amount of the hormones epinephrine, norepinephrine, metanephrine, and Dopamine in the urine. ...Read moreSee 1 more doctor answer
Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs. It is composed of mostly water, and breakdown products from blood cells impart ...Read more
What is the correlation of cortisol and catecholamines? I need to do a 24 hr urine test and both of these are being tested. Many thanks!
Adrenal: They are trying to rule out adrenal over secretion. Both hormones come out of the adrenal glands. ...Read more
24 hour urine catecholamine for a pheo- if a person does not have an episode during the 24 hours would it still show elevated levels. If so how?
Usually, yes: A pheo usually secretes catecholamines continuously, so it is not usually necessary to time the collection. These catecholamines yield a lot of breakdown products (eg. metanephrines). However, in some circumstances, if there is a very high suspicion for pheo and the initial tests are negative, and the attacks are sporadic, a urine collection timed with the episode is reasonable. ...Read more
Possible tumor: Urine catecholamines are separated into dopamine, epinephrine, norepinephrine, vma, and dopa, among others. Each of these metabolites are differently expressed by certain tumors, often in the adrenal gland, or sometimes in other sites. This gives a guide to where to test further, or what else may be giving rise to the symptoms (often high blood pressure, heart beat abnormalities, etc). ...Read more
Temporary, maybe: 24 hour urine tests for catecholamines are checking for epinephrine, norepinephrine, & other compounds that can be produced by catecholamine-secreting tumors called pheochromocytomas. Panic attacks alone might temporarily raise these levels, but not in sustained fashion like one of these tumors can. When present, pheochromocytomas can cause anxiety and panic attacks and raise urine catecholamines. ...Read more
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