Days Set Up
Analytic Time

8 hours

MiChart Code
VMA, 24HR Urine
Soft Order Code

Test Updated:



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Test Overview

Test Methodology

Liquid Chromatography - Mass Spectrometry (LC-MS)

Test Usage

Evaluate catecholamine production, useful in the diagnosis of pheochromocytoma and neuroblastoma and in confirmation of elevated catecholamine levels.

Reference Range

24 Hour Urine: VMA: 0-2 years: 0-1.5 mg/24 hrs, 3-9 years: 0-4.0 mg/24 hrs, 10-150 years: 0-10.0 mg/24 hrs; Random Urine: VMA/Creatinine Ratio:

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Collect 24 hour urine specimen. Add 25 mL of 50% glacial acetic acid (15 mL for pediatric patients) to container prior to start of collection. Following collection, mix well, measure 24 hour urine volume, aliquot 10 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Specimens with no preservative are also acceptable: add 50% glacial acetic acid to container following collection, mix well and send 10 mL aliquot (preferred); alternatively a non-acidified aliquot will be accepted. Patient should avoid medications, chocolate, fruit, bananas and any vanilla containing substances for 48 hrs prior to beginning collection. Random samples will be accepted on children less than 10 years old, in which case the VMAR test code must be ordered instead of the VMA test code.

Red Top Tube
Normal Volume
10 mL aliquot of 24 hour urine collection, 6 mL of a random collection.
Minimum Volume
4 mL aliquot of 24 hour urine collection, 4 mL of a random collection.

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.