Test Overview
Method
Liquid chromatography-tandem mass spectrometry (LC-MS/MS)
Result Included
Volume; Creatinine/L; Creatinine/d; Epinephrine; Epinephrine/Creatinine Ratio; Norepinephrine; Norepinephrine/Creatinine Ratio
Specimen
Specimen Type
Urine (24 hr)Volume
Sample Volume
25 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 usually do not interfere with this assay.
Collection & Handling
Collection Instructions
Collect urine in a container with 25 mL 6 mol/L (6N) HCl. The final pH must be maintained from 2 – 4.
Handling Information
Store and send cold or frozen.
Additional Information
State 24 hour volume and collection date.
Stability
| Refrigerated | Frozen |
|---|---|
| 1 month | Over 1 month |
Performance & Interpretation
Turnaround Time
7 days
Results
Name
Units
Reference Range
Conversion
-
VolumeL
-
Creatinine/Lmmol/LNone
-
Creatinine/dmmol/d7.0 - 15.0
-
Epinephrine Total - Urinenmol/dAdult: <150µg/d x 5.46
-
Epinephrine/Creatinine Rationmol/mmol Creatinine<20µg/mg Creatinine x 617
-
Norepinephrine Total - Urinenmol/dAdult: <600µg/d x 5.91
-
Norepinephrine/Creatinine Rationmol/mmol CreatinineAdult: <70µg/mg Creatinine x 669
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| CATF U | Volume | 7601 | L |
| Creatinine/L | 7637 | mmol/L | |
| Creatinine/d | 7602 | mmol/d | |
| Epinephrine | 63400 | nmol/d | |
| Epinephrine/Creatinine Ratio, 24 Hour Urine | 63401 | nmol/mmol creatinine | |
| Norepinephrine | 63402 | nmol/d | |
| Norepinephrine/Creatinine Ratio, 24 Hour Urine | 63403 | nmol/mmol creatinine |
Test Version
Last Updated
2023-01-26