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Test Code MISCLM Vanillylmandelic Acid (VMA), Random, Urine

Additional Codes

 

MAYO Test ID

VMAR

EPIC Test ID

LAB2608

 

Reporting Name

Vanillylmandelic Acid, Random, U

Useful For

Screening children for catecholamine-secreting tumors with a random urine collection when requesting vanillylmandelic acid only

 

Supporting a diagnosis of neuroblastoma

 

Monitoring patients with a treated neuroblastoma

Method Name

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Urine


Specimen Required


Container/Tube: Plastic, 10-mL urine tube (T068)

Specimen Volume: 5 mL

Collection Instructions:

1. Collect a random urine specimen.

2. Adjust the random urine pH to a level between 1 and 5 by adding 50% acetic acid dropwise and checking the pH.

Additional Information:

1. Patient's age is required.

2. Administration of L-dopa may falsely increase vanillylmandelic acid results; it should be discontinued 24 hours prior to and during collection of specimen.


Specimen Minimum Volume

2 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 28 days
  Frozen  180 days

Reject Due To

Hemolysis

NA

Lipemia

NA

Icterus

NA

Other

NA

Reference Values

<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

≥15 years (adults): <7.0 mg/g creatinine

Day(s) and Time(s) Performed

Monday through Friday; 8 a.m.

CPT Code Information

84585

LOINC Code Information

Test ID Test Order Name Order LOINC Value
VMAR Vanillylmandelic Acid, Random, U 3124-5

 

Result ID Test Result Name Result LOINC Value
60274 Vanillylmandelic Acid, Random, U 3124-5

Analytic Time

2 days (not reported on Sundays)

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.