Metanephrines, Fractionated, Plasma Free
Test Code: 121806
Performing Lab: LabCorp
CPT Code: 83835 001
Synonym
Metanephrine; Normetanephrine; Plasma Metanephrines; Quantitative Metanephrines
Specimen Type
Plasma
Specimen Container
Lavender-top (EDTA) tube
Volume
1.2 mL
Minimum Volume
0.7 mL (Note: This volume does not allow for repeat testing.)
Specimen Handling
Draw blood in chilled lavender-top (EDTA) tube. Invert to mix with preservatives. Centrifuge and transfer the plasma to a labeled plastic transport tube. Refrigerate or freeze separated plasma Immediately. IMPORTANT Note: The patient should be in a fully recumbent position (lying down) for at least 20 minutes before and during sample collection.
Patient Prep
Patient should be fasting overnight (water and non-caffeinated soft drinks are permissible). Patient should avoid alcohol, coffee, tea, tobacco and strenuous exercise prior to collection. See Limitations section for more information about other potential causes of elevated metanephrines.
Temperature
Sample must be refrigerated due to limited stability at room temperature. Freeze if unable to maintain refrigerated.
Methodology
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Stability
Room Temperature: Unstable
Refrigerated: 14 days
Frozen: 14 days
Refrigerated: 14 days
Frozen: 14 days
| Result Code | Result Name | LOINC |
|---|---|---|
| 070013 | Normetanephrine, Pl | 2669-0 |
| 070023 | Metanephrine, Pl | 38494-1 |
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