VMA Urine Test

Vanillylmandelic Acid (VMA) Urine Test

An essential test for detecting rare adrenal gland tumors. It measures VMA levels to diagnose conditions like pheochromocytoma non-invasively, allowing for early and effective medical intervention planning.

Trusted medical contentUpdated: 04-09-2026Views: 58LHL-2440

About this service

This test measures the amount of Vanillylmandelic Acid (VMA), the principal end product of catecholamine (adrenaline and noradrenaline) metabolism secreted by the adrenal gland and sympathetic nerves. It is measured in a 24-hour urine collection. An elevated level of VMA in urine is a classic biochemical marker for chromaffin cell tumors, such as Pheochromocytoma in the adrenal gland and Neuroblastoma in children.

Conditions and notices

Fasting is not required

Follow a restricted diet for 2-3 days before and during sample collection, as instructed by the laboratory (avoid the foods listed above).

Inform your doctor of all medications and supplements you are taking, as you may be asked to discontinue some before the test.

Avoid strenuous physical activity and emotional stress before and during the sample collection period.

Collect all urine over a 24-hour period accurately and keep the container refrigerated during the collection process.

Frequently Asked Questions

Short answers to the FAQs published with this service.

• What does the VMA urine test measure?

It measures vanillylmandelic acid, the principal end product of adrenaline and noradrenaline metabolism.

• How is the sample collected for the VMA test?

The service is based on a 24-hour urine collection.

• Why can VMA be used when pheochromocytoma is suspected?

Elevated urinary VMA is a biochemical marker associated with chromaffin-cell tumors such as pheochromocytoma.

• Why can VMA be used in children with suspected neuroblastoma?

Neuroblastoma can be associated with increased catecholamine metabolites such as VMA in urine.

• What adult reference range is listed for VMA in the service information?

The listed adult range is 1.5 to 7.5 mg per 24 hours.

Medical Laboratories

VMA Urine Test

Vanillylmandelic Acid (VMA) Urine Test

Trusted medical contentUpdated: 04-09-2026Views: 58LHL-2440

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VMA Urine Test | Vanillylmandelic Acid (VMA) Urine Test

Home Service Available

Service type24-Hour Urine Analysis

Duration24 hours (Collection)

Fasting / preparationFasting is not required

Home serviceAvailable

Medical notice: this information is for education and service understanding. It is not a diagnosis or a recommendation for an unnecessary procedure.

About this service

What is included?

✓A detailed analysis to measure the amount of VMA acid in a 24-hour urine sample
✓Consult an endocrinologist or oncologist (for children) to interpret the results.
✓Personal support services from Lahalak

Conditions and notices

Fasting is not required
Follow a restricted diet for 2-3 days before and during sample collection, as instructed by the laboratory (avoid the foods listed above).
Inform your doctor of all medications and supplements you are taking, as you may be asked to discontinue some before the test.
Avoid strenuous physical activity and emotional stress before and during the sample collection period.
Collect all urine over a 24-hour period accurately and keep the container refrigerated during the collection process.

Frequently Asked Questions

Short answers to the FAQs published with this service.

• What does the VMA urine test measure?

It measures vanillylmandelic acid, the principal end product of adrenaline and noradrenaline metabolism.

• How is the sample collected for the VMA test?

The service is based on a 24-hour urine collection.

• Why can VMA be used when pheochromocytoma is suspected?

Elevated urinary VMA is a biochemical marker associated with chromaffin-cell tumors such as pheochromocytoma.

• Why can VMA be used in children with suspected neuroblastoma?

Neuroblastoma can be associated with increased catecholamine metabolites such as VMA in urine.

• What adult reference range is listed for VMA in the service information?

The listed adult range is 1.5 to 7.5 mg per 24 hours.

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Important Notice:

Content on LahaLak is provided for educational purposes only. It is not a medical diagnosis, prescription, or substitute for consulting a qualified clinician. Medical decisions should not be made from this content alone.

Content reviewed according to the LahaLak Quality Charter.Editorial Policy & Medical Standards

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