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The University of Chicago Medicine Laboratories

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Specimen Collection and Handling

Transfusion

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Mayo Clinic Laboratories

Test Code PMET Metanephrines, Fractionated, Free, Plasma

Important Note

Order LABRFMETANS in Epic

 

 

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Plasma EDTA


Specimen Required


Patient Preparation: Use of an Epi-pen within the last 7 days may produce inaccurate results.

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube: Lavender top (EDTA)

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Within 2 hours of collection centrifuge and aliquot plasma into a plastic vial.


UChicago Medicine Medical Laboratories Note:

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
Plasma EDTA Frozen (preferred) 28 days
  Refrigerated  14 days
  Ambient  7 days

Reference Values

METANEPHRINE, FREE

<0.50 nmol/L

 

NORMETANEPHRINE, FREE

<0.90 nmol/L

Day(s) Performed

Monday through Saturday

CPT Code Information

83835

Report Available

2 to 5 days

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)

-Renal Diagnostics Test Request (T830)