Methylmalonic acid, serum or plasma-13583

Please Note:

LabCorp has announced that they are currently experiencing a testing and reporting delay for this assay.

Test info

  
Methylmalonic acid, serum or plasma
  
13583
  
LAB13583
  
MMA
  

Serum methylmalonic acid (MMA) measurement is used to evaluate individuals with signs and symptoms associated with vitamin B12 deficiency or congenital methylmalonic academia.

Specimen

  
Serum
  
  
2.0 mL
  
0.6 mL
  

Immediately following collection, thoroughly mix sample by gently inverting 5 times

  
  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin within one (1) hour of sample collection

 

  

Gold serum separator (SST) tube

  
Heparin plasma
  

Red serum vial/tube, 5 mL

Dk green heparin (Li or Na), no gel

  

  

Dk green:

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10, times to prevent clotting

  

Red:

  1. Allow sample to clot
  2. Spin
  3. Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum, within one (1) hours of sample collection

Dk green:

  1. Spin
  2. Transfer plasma to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as the appropriate plasma type, within one (1) hours of sample collection
  
  

Refrigerated (preferred) - 14 days

Ambient - 14 days

Frozen - 19 days

Freeze/thaw cycles - stable x 3

  
  • Plasma from a light blue-top (citrate)
  • Plasma from a yellow-top tube (ACD) 

Performance

  
LabCorp Burlington (706961): R-LC
  
Mo - Fr
  
3 - 7 days
  

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

Clinical and Interpretive info

  

0 - 378 nmol/L

Billing

  
83921
  
Result UNLOINC

Tracking

  
04/10/2019
  
03/30/2021
  
03/16/2021