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What is a VMA VANILLYL MANDELIC ACID URINE 24H?

VMA Vanillylmandelic Acid Urine 24H is a 24-hour urine test that measures vanillylmandelic acid, a breakdown product of adrenaline and noradrenaline. It is done to help evaluate catecholamine-secreting tumors such as pheochromocytoma and neuroblastoma, and to support the investigation of unexplained high blood pressure or related symptoms. The test may also be used to monitor treatment in patients with these conditions and assess how much catecholamine the body is producing.

Additional Information

Also known as/ Other names: 24 Hour Urine VMA Test, Vanillylmandelic Acid, 24 Hour Urine, 24 Hr Urinary VMA, Urine VMA Quantitative Test
Parameters: 1
Recommended for: M/F/Others
Sample Type: 24 Hrs. Urine
Patient Preparation: Patient should strictly avoid Theophylline, chocolate, vanilla, banana, alcoholic beverages, tea/coffee, tobacco and strenuous exercise at least 72 hrs before and during specimen collection.
Reports: 3 days

FAQs

What conditions can this test help detect?

It may help detect pheochromocytoma, neuroblastoma, and other catecholamine-producing tumors.

Who may need this test?

It may be advised for people with unexplained high blood pressure, headaches, sweating, palpitations, or suspected adrenal tumors.

Why is a 24-hour collection necessary?

It gives a more accurate measurement than a single urine sample.

What does a high VMA level mean?

A high result may suggest increased catecholamine production, often linked to certain tumors.

Does a normal result rule out all tumors?

No, a normal result does not always rule out disease, so other tests may still be needed.

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