Test Code LAB9995 Methylmalonic Acid, Liquid Chromatography
Aliases
MMA LC
Specimen Type
Serum or Plasma:
Green Top -Lithium Heparin (Preferred)
Dark Green Top – Sodium Heparin
Red Top -Plain
Gold Top -SST
Processing Instructions
Green or Gold top-CENTRIFUGE per procedure / Red Top – Clot 60 minutes in upright position
Pipette off plasma or serum into pour off tube
Attach original tube to pour off tube with rubber band
Store and ship sample Frozen on dry ice.
Specimen Volume
Preferred: 3.0 mL
Minimum: 0.6mL
Temperature
Frozen (dry ice)
Sample Stability
Frozen: 8 Weeks
Test/Batch Schedule
Tue and Thur
TAT
7 days
Test Components
Methylmalonic Acid
Reference Range
0-1 year: ≤0.6 mcmol/L
1 year and up: ≤0.4 mcmol/L
CPT
83921
Performing Section
Biochemical Genetics