Test Overview
Method
Liquid chromatography-tandem mass spectrometry (LC-MS/MS)
Result Included
Dopamine Uncalculated; Dopamine, 24 hour; Dopamine/Creatinine Ratio; Volume; Creatinine/L; Creatinine/d
Specimen
Specimen Type
Urine (24 hr)Volume
Sample Volume
20 mL
Patient Preparation
Restrict caffeine, nicotine and alcohol 24 hours prior to collection. Discontinue Methyldopa (Aldomet) at least 5 days prior to collection. Other drugs do not interfere with this assay.
Collection & Handling
Collection Instructions
Collect urine in a container with 25 mL 6 mol/L (6N) HCl acid.
Handling Information
The final pH must be maintained between 2.0 – 4.0. Indicate 24 hour volume and collection date.
Performance & Interpretation
Turnaround Time
10 days
Results
Name
Units
Reference Range
Conversion
-
VolumeL0.600 - 1.600
-
Creatininemmol/L
-
Creatinine/dmmol/d7.0 - 15.0
-
Dopamine Uncalculatednmol/L
-
Dopamine, 24 hournmol/dMale: <3400
Female: <2500 -
Dopamine/Creatinine Rationmol/mmol creatinine<390.0
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| DOPAF U | Dopamine Uncalculated | 63319 | nmol/L |
| Dopamine, 24h | 63320 | nmol/d | |
| Dopamine/Creatinine Ratio, 24 Hour Urine | 63321 | nmol/mmol creatinine | |
| Volume | 7601 | L | |
| Creatinine/L | 7637 | mmol/L | |
| Creatinine/d | 7602 | mmol/d |
Test Version
Last Updated
2020-03-11