Best test for diagnosis of Carcinoid tumor:
Ans. (a) 24 hour urinary 5H.I.A.ARef: Harrison 19th ed. 1564-65* 5-HLAA is the major urinary metabolite of serotonin, a ubiquitous bioactive amine. Serotonin, and consequently 5-HLAA, are produced in excess by most carcinoid tumors, especially those producing the carcinoid syndrome of flushing, hepatomegaly, diarrhea, bronchospasm, and heart disease.
24 hour urinary 5H.I.A.A
24 hour catecholamines
24 hour vaniylmandelic acid levels
24 hour metanephrine levels
Miscellaneous (Endocrinology)