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St. John Health System
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Index:

Metanephrines, Plasma (Free)

Order Name METANEPH P
Test Number: 3805327
Revision Date 02/16/2021
Test Name Methodology LOINC Code
Metanephrines, Plasma (Free)
Liquid Chromatography/Tandem Mass Spectrometry  
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 0.6 mL (0.4 mL) Plasma EDTA (Lavender Top) Refrigerated
Instructions Specimen Type: Lavender-top (EDTA) tube
Specimen Storage: Sample must be refrigerated due to limited stability at room temperature. Freeze if unable to maintain refrigerated.
Specimen Collection: 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.
Special Instructions: For those centers where sampling blood in the fully recumbent, supine position is not possible testing for 24-hour urine metanephrines(LabCorp test number test 004234) may be preferable.
Specimen Stability: Ambient: Unstable, Refrigerated : 14 days, Frozen: 14 days
GENERAL INFORMATION
Expected TAT 3-6 Days  
Notes Labcorp Test Code: 121806
CPT Code(s) 83835
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab