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Related to metanephrine: pheochromocytoma, Catecholamines


n. metanefrina, catabolito de epinefrina que se encuentra en la orina.
References in periodicals archive ?
Her serum aldosterone, potassium, renin, 24-hour urine metanephrine levels, and dexamethasone suppression test results were within normal limits.
which are described as 3-hydroxy-2-methylpyridine-4,5-dicarboxylate, L-dopa, DL-dopa, metanephrine, and phosphoguanidinoacetate respectively.
Measurements of plasma methoxytyramine, normetanephrine, and metanephrine as discriminators of different hereditary forms of pheochromocytoma.
The patient's 24-hour urine metanephrines were markedly elevated at 4057 mcg (reference range, 0-899), with normetanephrines of 4015 mcg (reference range, 0-599) and a metanephrine-to-creatinine ratio of 2352 (reference range, 0-599).
Subsequently, urinary free cortisol (UFC) (normal range: <110[micro]g), urinary normetanephrine (normal range: 88-444 [micro]g/day) and urinary metanephrine (normal range: 52-341 [micro]g/day) were measured and the 1 mg overnight dexamethasone suppression test (DST) was performed.
28) Elevated levels of urinary metanephrine or resting plasma catecholamines can suggest the diagnosis of pheochromocytoma.
3) Diagnosis may be made with 24 hr urine metanephrine or catecholamine measurement, 123I-metaiodobenzylguanidine scintigraphy (MIBG) scanning, or on pathological analysis after resection of an adrenal tumor.
Measurements of plasma free metanephrines (normetanephrine and metanephrine) provide a particularly sensitive test for the diagnosis of pheochromocytoma (1-4).
The present study has demonstrated that the normalized product of urinary metanephrine and normetanephrine (nMAD x nNMT) provides a useful measurement for the detection of pheochromocytoma in the unselected referral population of a tertiary laboratory.
Other exceptions include patients with rare dopamine-producing paragangliomas in which norepinephrine and epinephrine are not synthesized or metabolized to normetanephrine and metanephrine (2).
We present evidence suggesting inaccurate metanephrine and normetanephrine calibration by US laboratories.