VANILLYLMANDELIC ACID (VMA) 24 HOUR URINE
General Information
HLAB/HOL Code: VMA
UPHSM LIS Test #: 027720
Schedule:
Testing Time: 3-4 Days
Testing Lab: Labcorp
UPHSM LIS Test #: 027720
Schedule:
Testing Time: 3-4 Days
Testing Lab: Labcorp
Specimen Info
Only 1 specimen type required, unless otherwise specified
Volume: 4.0 mL
Temperature: Ambient
Tube Type: Urine - 24 hr urine
Collection Info:
Minimum Volume: 1 mL aliquot (Note: This volume does not allow for repeat testing.)
Container: Plastic urine container, no preservative (preferred), or acidic preservative
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). Measure and record total urine volume. Mix well; send aliquot. Label container with patient's name, date and time collection started, and date and time collection completed.
Temperature: Ambient
Tube Type: Urine - 24 hr urine
Collection Info:
Minimum Volume: 1 mL aliquot (Note: This volume does not allow for repeat testing.)
Container: Plastic urine container, no preservative (preferred), or acidic preservative
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). Measure and record total urine volume. Mix well; send aliquot. Label container with patient's name, date and time collection started, and date and time collection completed.
Methods
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Clinical Utilities
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.
CPT Codes
84585
* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
