Vanillylmandelic Acid 24hr Urine VMA24

Synonyms

Allscripts (AEHR) Order Name

Vanillylmandelic Acid, Urine

Sunrise Clinical Manager (SCM) Order Name

Vanillylmandelic Acid, Urine 24 Hour

EPIC Order Name

24 Hour Urine, Vanillylmandelic Acid (VMA)

Clinical Info

Diagnose pheochromocytoma, VMA is of value for evaluation of hypertension, diagnose and follow up neuroblastoma, ganglioneuroma, and ganglioneuroblastoma. Most neuroblastoma patients excrete excess HVA in 24-hour collections. If VMA and HVA are both used in work-up, up to 80% of all cases will be detected.
 

Specimen Type

Urine

Container

24hr Ur No Preserv

Collection Instructions

Container/Tube:  24 Hr Urine Container No preservative
Specimen: Send entire container or 4mL well mixed aliquot- Indicate TV on the cup or tube.
Transport Temperature: Refrigerated
Stability: 7 Days Room Temperature
               14 Days Refrigerated or Frozen
Patient Preparation:  Patient should avoid salicylates, caffeine, phenothiazine, and antihypertension agents. Also coffee, tea, chocolate, fruit (especially bananas and any vanilla containing substances for 72 hours prior to collection).
Collection:  Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine, including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning).

Transport Instructions

Refrigerated

Specimen Stability

7 Days Room Temperature
               14 Days Refrigerated or Frozen
Patient Preparation:  Patient should avoid salicylates, caffeine, phenothiazine, and antihypertension agents. Also coffee, tea, chocolate, fruit (especially bananas and any van

Methodology

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Days Performed

Performing Laboratory

LabCorp

CPT

84585

PDM

5900026

Result Interpretation

0.0-7.5  mg/24 hours
 
This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.

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