Homovanillin mandelic acid (HVA)

Vanillin-migdalic acid - a metabolite of catecholamines secreted With urine. A test useful in diagnosing pheochromocytoma, a tumor located in the adrenal glands and producing in excessive amounts of catecholamines. The symptoms of the tumor are related to its secretory activity. There is paroxysmal hypertension, headache, tachycardia, pale skin, gastrointestinal symptoms gastrointestinal tract such as nausea, vomiting, pain.