Fractionated Metanephrines, Metanephrines Free, urine, NMN, urine, Normetanephrine, free, Normetanephrines, urine
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Metanephrines – Fractionated LC-MS/MS, Random Urine
Test ID: METFRU
Test
Aliases/Synonyms
Method
LC-MS/MS
Report Includes
Free Normetanephrine; Free Normetanephrine/Creatinine Ratio; Free Metanephrine; Free Metanephrine/Creatinine Ratio; 3-Methoxytyramine; 3-Methoxytyramine/Creatinine Ratio; Creatinine
Specimens
Urine (Random)
Test Location
St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8
Test Version
21-Dec-2023
Specimen
Specimens
Urine (Random)
Sample Volume
25 mL
Patient Preparation
Restrict caffeine, nicotine and alcohol for 24 hours prior to collection. Discontinue Methyldopa (Aldomet) at least 5 days prior to collection. Avoid reserpine, alpha methyldopa, levodopa, monoamine oxidase inhibitors.
Collection & Handling
Handling Information
Acidify aliquot with 6 mol/L (6N) HCl. The final pH of the urine must be 2.0 – 4.0.
Stability
| Refrigerated | 1 month |
|---|---|
| Frozen | >1 month |
Test Version
21-Dec-2023
Performance / Interpretation
Method
LC-MS/MS
Turnaround Time
10 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| Creatinine | nmol/L |
|
||
| Free Normetanephrine | nmol/L |
|
||
| Free Normetanephrine/Creatinine Ratio | nmol/mmol creatinine |
|
||
| Free Metanephrine | nmol/L |
|
||
| Free Metanephrine/Creatinine Ratio | nmol/mmol creatinine |
|
||
| 3-Methoxytyramine | nmol/L |
|
||
| 3-Methoxytyramine/Creatinine Ratio | nmol/mmol creatinine |
|
||
Test Location
St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8
Test Version
21-Dec-2023
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| METFRU | 63304Normetanephrine Random Free | nmol/L |
| 63305Normet/Crt Ratio | nmol/mmol creat | |
| 63306Metanephrine Random Free | nmol/L | |
| 63307Met/Crt Ratio | nmol/mmol creat | |
| 63308Methoxytyramine Random | nmol/L | |
| 633093-Methoxytyramine/Creat Ratio | nmol/mmol creat | |
| 28004Creatinine Rand Urine | mmol/L |
Test Version
21-Dec-2023