In which condition vanillylmandelic acid is excreted in urine: (A) Gaucher's disease, (B) Phenylketonuria, (C) Pheochromocytoma, (D) Hartnup's disease
Answer is C. In Pheochromocytoma, increased and uncontrolled synthesis of catecholamines takes place.
The breakdown product of catecholamines is vanillymandelic acid, and thats get excreted in urine.