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Urine Vanillylmandelic AcidAka: Urine VMA

Physiology
1. VMA is a Catecholamine metabolite
Indications
1. Pheochromocytoma (other tests used more often)
2. Neuroblastoma diagnosis or monitoring
3. Suspected Multiple endocrine adenomatosis
4. Thyroid Medullary Carcinoma
  1. Evaluation for coexisting Pheochromocytoma
Normal Levels
1. Age 3-8 years: less than 2.3 mg per day
2. Age 9-12 years: less than 3.4 mg per day
3. Age 13-17 years: less than 3.9 mg per day
4. Adults: less than 6.7 mg per day
Causes of Increased Levels
1. Pheochromocytoma
2. Neuroblastoma
3. Ganglioma

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This page was written by Scott Moses, MD, and was last revised 1/26/2008. Please send comments and questions to the editor. Contact information may be found on the page About the Family Practice Notebook. These pages are best viewed with Microsoft Internet Explorer 5.0.