Metanephrines, fractionated, plasma free

Alphabetical Test listing

Metanephrines, fractionated, plasma free-13578

  
Metanephrines, fractionated, plasma free
  
13578
  
LAB13578
  
METAFRAC
  
Metanephrine
Normetanephrine
Plasma metanephrines
Quantitative metanephrines
  

Diagnose pheochromocytoma, a catecholamine-secreting tumor of the adrenal medulla

  
  • 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.
  
EDTA plasma
  
  
0.6 mL
  
0.4 mL
  
  1. Draw blood in chilled lavender-top (EDTA) tube
  2. Immediatley following collection, mix sample by inverting 8 - 10 times to prevent clotting
  
  1. Spin
  2. Transfer the plasma to a Transfer vial/tube with cap - 12mL (LabCorp) 

Note: If necessary, the whole blood sample may be kept refrigerated at 4C for up to two hours before centrifugation

 

  

Refrigerated (preferred) - 14 days

Frozen - 14 days

Freeze/thaw cycles - stabile x3

Ambient - NO

  
LabCorp Burlington (121806): R-LC
  
Mo - Fr
  
7 - 9 days
  

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

  

Metanephrine:

0 - 88 pg/mL

Normetanephrine:

Age (years) Range (pg/mL)
Male Female
0 - 4  Not established Not established
5 - 11 0.0 - 165.9 0.0 - 148.0
12 - 19  0.0 - 150.8 0.0 - 150.8
20 - 40  0.0 - 210.1 0.0 - 210.1
41 - 50  0.0 - 218.9 0.0 - 218.9
51 - 60  0.0 - 244.0 0.0 - 244.0
61 - 80 0.0 - 285.2 0.0 - 285.2
     >80 0.0 - 297.2 0.0 - 297.2
  
83835
  
Result 2669-0
  
04/10/2019
  
11/08/2021
  
11/08/2021