Vanillylmandelic Acid (VMA), Urine 24 hour
VMA, Urine Vanillylmandelic Acid, Vanillymandelic Acid (VMA), Urine 24 hr, Vanillylmandelic Acid, Urine (VMA), WARDE: UVMA, EPIC: LAB7066, SOFT: XVM24
- A Urine Creatinine test is performed on each sample.
- Please refer to the Specimen Collection Manual for instructions on 24 Hour Urine Collection:
If a random sample for Vanillylmandelic Acid is requested, please see Vanillylmandelic Acid (VMA), Urine Random.
Specimen Collection Criteria
Collect: 24 hour urine sample with 25 mL of 6N Hydrochloric Acid added prior to the start of collection.
- Keep 24 hour urine specimen iced or refrigerated during collection.
- Include start and end dates and times for the collection period on the specimen container.
Urine Preservative Options
6N Hydrochloric Acid
Boric Acid (10g)
50% Acetic Acid
Physician Office/Drawsite Specimen Preparation
Maintain specimens refrigerated (2-8°C or 36-46°F) prior to transport.
Preparation for Courier Transport
Transport: Entire 24 hour urine collection, refrigerated (2-8°C or 36-46°F).
- Samples not kept refrigerated (2-8°C or 36-46°F).
- Specimens not collected and processed as indicated.
Specimen Stability for Testing (preserved):
Room Temperature (20-26°C or 68-78.8°F): 10 days
Refrigerated (2-8°C or 36-46°F): 14 days
Frozen (-20°C/-4°F or below): 1 year
Specimen Stability for Testing (unpreserved):
Room Temperature (20-26°C or 68-78.8°F): unacceptable
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 14 days
Specimen Storage in Department Prior to Disposal:
Specimen retention time is determined by the policy of the reference laboratory. Contact the Sendout Laboratory with any questions.
Sent to Warde Medical Laboratory, Ann Arbor, MI.
Monday, Wednesday, Friday.
Results are available in 4-7 days.
High-Performance Liquid Chromatography (HPLC).
Elevated levels are seen in cases of pheochromocytoma, neuroblastoma, ganglioneuroma and in some cases of carcinoid tumor.
Vanillylmandelic Acid is the primary metabolite of the catecholamines. Quantitation of VMA has been valuable in the diagnosis and follow-up of patients with phenochromocytoma and related neurogenic tumors. Catecholamine-secreting tumors are surgically curable; therefore, it may be desirable to evaluate hypertensive patients for this possible cause.
WARDE: UVMA, EPIC: LAB7066, SOFT: XVM24
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This directory currently reflects information only for specimens collected and/or processed at the Farmington Hills,
Grosse Pointe, Royal Oak, and Troy campuses.