Most specific marker of pheochromocytoma:
Pheochromocytoma - tumor for Adrenal gland which secretes high amount of epinephrine & Nor-epinephrine catabolic products of catecholamine - VMA VMA can be measured in 24 hours urine sample
VMA
Catecholamine
5 - HIAA
Serotonim
Classification and metabolism of amino acids