5 HIAA in urine is due to:: (A) Pheochromocytoma, (B) Carcinoid syndrome, (C) Phenyl ketonuria, (D) Alkaptonuria
Answer is B. Ans. B. Carcinoid syndromeIn Pheochromocytoma VMA is excreted in excess in urine.In Carcinoid syndrome 5 HIAA is excreted in excess in urine.In PKU Phenyl Ketones like Phenyl acetate and Phenyl Pyruvate is excreted in urine.In Alkaptonuria Homogentisate is excreted in urine.