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Lab Test Dictionary

VMA (Vanillylmandelic Acid), Random Urine (1710)


High Performance Liquid Chromatography (HPLC)

Specimen Type

Urine, Random

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID


Lab Test Days


Standard TAT

3-6 Days

Collection Information

Specimen Required

5-10 mL Random Urine

Container Type

Sterile Container

Collection Instructions

It is preferred 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.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp=10 Days; Refrigerated=14 Days; Frozen=1 Year

Rejection Criteria

pH >3.0 received unfrozen

Test Volume Required

10 mL Random Urine

Minimum Test Volume

5 mL Random Urine

Processing Instructions

Adjust pH to < 3.0 using 6N HCl. Urine without preservative is acceptable if pH is below 6 and the sample is sent frozen. Indicate pH in comments, on specimen and batch sheet.

Included Tests

Includes creatinine.

CPT Codes

82570, 84585