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Urine Vanillylmandelic Acid (VMA) with Creatinine, 24 Hour
MessagePatient Preparation: It is preferable for the patient to be off medications for three days prior to collection. However, common antihypertensives (diuretics, ACE inhibitors, calcium channel blockers, alpha and beta blockers) cause minimal or no interference. Patient should avoid alcohol, coffee, tea, tobacco (including use of nicotine patch), bananas, citrus fruits and strenuous exercise prior to collection. Specimen Requirement: Preferred: Preserved 24-hour urine (6N HCl)Acceptable: Unpreserved urine (pH < or = 6)Immediate Specimen Processing: Patient 24-Hour Urine Collection Instructions1. Add 25 mL 6N HCl to container prior to collection (if using)2. Keep specimen Refrigerated during and after collection. IL 24-Hour Pre-Analytical Processing Job Aid1. Transfer a well-mixed urine specimen to a BD Clear No Additive container or a screw-cap transport vial before transporting to the lab. Do not send the 24 hour collection kit/jug to the lab. Ambulatory Transport Temperature to Inova Central Lab: Preserved: Refrigerated Unpreserved: FrozenSpecimen Stability: Preserved: 14 daysUnpreserved: 30 days
Test Code
LAB3396 VAC24
Alias/See Also
VAC24
CPT Codes
82570| 84585
Includes
Patient Preparation:It is preferable for the patient to be off medications for three days prior to collection. However, common antihypertensives (diuretics, ACE inhibitors, calcium channel blockers, alpha and beta blockers) cause minimal or no interference. Patient should avoid alcohol, coffee, tea, tobacco (including use of nicotine patch), bananas, citrus fruits and strenuous exercise prior to collection.@BKRCERMSGREFRESH(2302793)@ @BKRCERMSGREFRESH(2302794)@
Instructions
Processing Instructions: IL 24-Hour Pre-Analytical Processing Job Aid1. Measure the total volume of the specimen. 2. Mix the specimen well.3. Document the total volume and other information in Beaker in the Specimen Lab Comments. 4. Transfer 1 mL (minimum of 0.7 mL) to a Clear BD No Additive container . 5. Record the Total Volume on the specimen container . Note: Do not send the 24-hour collection jug to ICL or the reference lab. Preferred Testing Volume: 10 mL urineMinimum Testing Volume: 5 mL urine Transport Temperature: Preserved: Refrigerated Unpreserved: Frozen Stability: Preserved urineAmbient: 10 daysRefrigerated : 14 daysFrozen: 1 year Unpreserved urineAmbient: UnacceptableRefrigerated : UnacceptableFrozen: 30 days Causes for Rejection: Preserved urine received Refrigerated with pH >3 Unpreserved urine received frozen with pH >6Performing Lab: Quest SJCICL or Main Lab Specimen Team Only: If no preservative is used, specimen must be stored Refrigerated during collection but shipped frozen and pH must be<=6.
Report Available
7-Days
Clinical Significance
1230170462
Last Updated: May 18, 2026
