Test directory: VMA, Random Urine

Ordering Code 5482
Test Name VMA, Random Urine
Alias Vanillylmandelic Acid, Random Urine
Preferred Specimen Urine, Random
Preferred Container Sterile Container
Other Specimen/Container Random Urine in Clean Container
Urine without preservative is acceptable if pH<6 and sample is shipped frozen.
Optimum Volume 20 mL
Collection Instructions Patient should avoid alcohol, caffeine (coffee, tea, energy drinks, etc.), nicotine (tobacco, including the use of nicotine patch), bananas, citrus fruits, and strenuous exercise 3 days prior to collection. It is preferable for the patient to be off medications for 3 days prior to collection. However, common antihypertensives (diuretics,
ACE inhibitors, calcium channel blockers, alpha and beta blockers) cause minimal or no interference.
Handling Instructions Upon receipt at Central, acidify urine to pH<3 with 6N HCl or freeze immediately.
Transport Requirements Oahu: Refrigerated
Airline: Refrigerated
Specimen Stability Ambient: 10 Days
Refrigerated: 2 Weeks
Frozen: 1 Year
Rejection Criteria pH>3 and not frozen
Restrictions not followed, unless okayed by ordering physician.
Avail. Stat NO
Analytic Time Up to 7 Days
Methodology High Performance Liquid Chromatography, Electrochemical
Detection (HPLC)
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of June 29, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
VMA ALL See report.
Creatinine, Random Urine ALL See report.