Home
HelpTest Code PMET Metanephrines, Fractionated, Free, Plasma
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Plasma EDTASpecimen Required
Patient Preparation: Use of an Epi-pen within last 7 days may produce inaccurate results.
Collection Container/Tube: Lavender top (EDTA)
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Spin down within 2 hours of draw. Plasma must be separated from red blood cells within 2 hours of collection.
Offsite collection instructions:
Spin Lavender top
Aliquot plasma
Place in the freezer until courier pick up
Send frozen sample on dry ice to the Main Lab (Laboratory Service Center)
Specimen Minimum Volume
0.3 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma EDTA | Frozen (preferred) | 14 days | |
| Refrigerated | 7 days |
Reference Values
METANEPHRINE, FREE
<0.50 nmol/L
NORMETANEPHRINE, FREE
<0.90 nmol/L
Day(s) and Time(s) Performed
Monday through Saturday; 1 p.m.
Not reported on Sunday
CPT Code Information
83835
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | OK |
Method Name
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-General Request (T239)
-Oncology Test Request (T729)