Methodology
High Performance Liquid Chromatography (HPLC), Electrochemical Detection
Synonyms
VMA
Specimen Type
Urine, Timed Collection
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
LAB01347
Lab Test Days
Monday-Friday
Standard TAT
5-7 Days
Collection Information
Specimen Required
5-10 mL 24 Hour Urine
Container Type
24-Hour Urine 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
Refrigerate-OK/Frozen-OK/Ambient-OK
Specimen Stability
Room Temp: 10 Days; Refrigerated: 14 Days; Frozen: 1 Year
Rejection Criteria
PH >3.0 Received Unfrozen
Test Volume Required
10 mL Urine
Minimum Test Volume
5 mL 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 shipped frozen. Indicate total volume and pH in comments, on specimen and batch sheet.
Included Tests
Creatinine
CPT Codes
82570, 84585
Revised
03-08-16
Initials
SL