Test Directory

Vanillylmandelic Acid, 24 Hour, Urine

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Updated Test Information:

Test Description
Vanillylmandelic Acid, 24 Hour, Urine
Synonym(s)
Vanillylmandelic Acid, 24 Hr
Test ID
VMA
General Information
Useful for:
Screening children for catecholamine-secreting tumors with a 24-hour urine collection when requesting testing for only vanillylmandelic acid
Supporting a diagnosis of neuroblastoma
Monitoring patients with a treated neuroblastoma
Specimen Type
Urine
Specimen Requirements
Urine Cup
Stability
Refrigerated (preferred) 28 days
Frozen 180 days
Unacceptable Specimen Conditions
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.
Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Estimated TAT
2-4 days
Testing Schedule
Monday-Friday
CPT Code(s)
84585
Minimum Sample Volume
2 mL
Reference Range
<1 year <25.0 mg/g creatinine
1 year <22.5 mg/g creatinine
2-4 years <16.0 mg/g creatinine
5-9 years <12.0 mg/g creatinine
10-14 years <8.0 mg/g creatinine
> or =15 years (adults) <8.0 mg/24 hours
Performing Lab
Mayo
LOINC Code(s)
3122-9, 30571-4, 13362-9, 3167-4