Test directory: VMA, 24-Hour Urine with Creatinine

Ordering Code 338
Test Name VMA, 24-Hour Urine with Creatinine
Alias VMA (Vanillylmandelic Acid)
24-Hour Urine with Creatinine
Preferred Specimen Urine, 24 Hour
Preferred Container 24 Hour Urine Container
Optimum Volume 10 mL
Collection Instructions 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
For unpreserved collections:
For the duration of collection patient must keep specimen in refrigerated condition. Specimen should be transported to the lab within 6-8 hours in cool (refrigerated) condition for processing.
Handling Instructions Aliquot 10 mL of well mixed 24-hour urine specimen and ship frozen. Record 24-hour urine volume and patient's age on test request form and on urine container
Measure 24-hour urine and Acidify urine to pH International handling:
Use 25 mL 6N HCl to adjust 24-hour urine pH to < or =3
Mix well and aliquot 10mL for testing, freeze for transport.
Transport Requirements Oahu: Refrigerated
Airline: Frozen
Specimen Stability Ambient: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 Days
International (Preserved urine only):
Ambient: 10 Days
Refrigerated: 14 Days
Frozen: 1 Year
Rejection Criteria Urine received frozen with pH > 6
Avail. Stat NO
Analytic Time Up to 7 Days
Methodology High Performance Liquid Chromatography (HPLC)
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of July 18, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Creatinine, 24 Hr Urine ALL See report.
VMA, 24 Hr Urine ALL See report.
Total Volume ALL See report.