24 hours urine for VMA is used for diagnosis of diseases of:
a. Adrenal cortex.
b. Adrenal medulla
(b) Catecholamines are oxidized to VMA and metanephrins. 24hour urinary metanephrins is the best single test for pheochromocytoma. Specificity and sensitivity approach 100% when both VMA and metanephrines are measured.
a. Adrenal cortex.
b. Adrenal medulla
(b) Catecholamines are oxidized to VMA and metanephrins. 24hour urinary metanephrins is the best single test for pheochromocytoma. Specificity and sensitivity approach 100% when both VMA and metanephrines are measured.
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Clinical Chemistry