<prompt> VMA is excreted in urine in:-AlkaptonuriaPhenyl ketonuriaDiabetic ketoacidosisPheochromocytoma  <response>: VMA - Vanillyl mantellic acid which is an excretory product of catecholamine and increased in pheochromocytoma and neuroblastoma. Catabolism of catecholamine Enzymes involved are Mono amine oxide MAO Catechol-o-methyl transferase COMT Catabolic end product of Dopamine Nor- Epinephrine Epinephrine Homo vanillic acid Nor Metanephrine Metanephrine So, we say VMA is the catabolic end product of two catecholamine - Epinephrine and Nor-Epinephrine For the diagnosis of Pheochromocytoma and neuroblastoma VMA levels are checked and the normal levels are 2-6 mg24 hr urine sample. 