Metanephrines, Fractionated 24-Hour Urine
Order Name
METANEPH U
Test Number: 3800350
Revision Date 12/12/2022
Test Number: 3800350
Revision Date 12/12/2022
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Metanephrine, Urine - per 24h
|
Quantitative HPLC/Tandem Mass Spectrometry | 19049-6 |
|
Normetanephrine, Urine - per 24h
|
Quantitative HPLC/Tandem Mass Spectrometry | 2671-6 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 10 mL aliquot (2.5 mL aliquot ) | Urine, 24-hour | 24 hour Urine Container | Room Temperature |
| Instructions | Notes: 2.5 mL aliquot (Note: This volume Does NOT allow for repeat testing.) Specimen Type: Plastic urine container with no preservative or 6N HCl. Container Detail: No preserv Specimen Storage: Room Temperature Specimen Collection: Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). Screw the lid on securely. Label container with patient's name, date and time collection started, and date and time collection finished. Measure and record total 24-hour volume. Mix well; send aliquot. (HCl is an acceptable preservative if required for a concurrently collected assay. PeopleSoft item number for this container is *21584.) Special Instructions: Record total 24-hour urine volume on the request form. Specimen Stability: Ambient: 14 days, Refrigerated : 14 days, Frozen: 14 days |
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| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Sun-Sat |
| Expected TAT | 3 - 6 days |
| Clinical Use | The diagnosis of pheochromocytoma can be confirmed by increased levels of the catecholamine metabolites, metanephrines, and vanillylmandelic acid (VMA). Urinary metanephrine determinations have been recommended as the most accurate screening method for patients suspected of having pheochromocytoma. |
| Performing Labcorp Test Code | 004234 |
| Notes | Labcorp Test Code: 004234 |
| CPT Code(s) | 82570; 83835 |
| Lab Section | Reference Lab |