VMA; VMA/Creat Ratio; Creatinine
Vanillylmandellic Acid (VMA) LC-MS/MS, Random Urine
Test
Method
LC-MS/MS
Report Includes
Specimens
Urine (Random)
Test Location
St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8
Test Version
16-Nov-2022
Specimen
Specimens
Urine (Random)
Collection Containers
Mid-stream urine container
Sample Volume
5 mL
Minimum Volume
2 mL
Patient Preparation
The following foods and medications should be avoided for three (3) days prior to the collection of urine, and during the collection of the sample:
Foods containing high caffeine concentrations (e.g. coffee, tea, cocoa, chocolate, caffeinated beverages, foods containing high amine concentrations (e.g. bananas, avocados, cheese, walnuts, alcohol, fruit and juices) and foods containing vanilla can increase urinary HVA/VMA excretion. Essential hypertension, intense anxiety and intense physical exercise can also result in raised HVA/VMA excretion.
Medications and drugs such as Salicylate, Histamine, Acetaminophen, Levodopa, Ajmaline, Lithium, Epinephrine, Nitroglycerin, Glucagon, Rauwolfia Alkaloids and Guanethidine can increase HVA/VMA.
Contact your physician for approval before discontinuing any prescription medication. Be sure to discuss all non-prescription medications with your physician.
Collection & Handling
Handling Information
Aliquot 2 mL of urine from the random collection sample and adjust pH to 2 – 4 with Hydrochloric acid.
Stability
Refrigerated | 1 month |
---|---|
Frozen | 90 days |
Test Version
16-Nov-2022
Performance / Interpretation
Method
LC-MS/MS
Turnaround Time
8 days
Results
Name | Units | Reference Range | Conversion Factor | |
---|---|---|---|---|
VMA/Creat Ratio | µmol/mmol cr |
|
||
Test Location
St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8
Test Version
16-Nov-2022
Interface / Setup
HL7 Interface Codes
Order Code | Result Codes | Units |
---|---|---|
VMARU | 28004Creatinine Rand Urine | mmol/L |
28078VMA Random | umol/L | |
28080VMA/Create Ratio Random | umol/mmol cr |
Test Version
16-Nov-2022