Order Code: C2405
ABN Requirement: No
Synonyms: MMA; Methylmalonate; MMA, Blood
Volume: 2.0 mL
Minimum Volume: 0.7 mL
Container: Gel-barrier tube (SST, Tiger Top)
- Collect and label sample according to standard protocols.
- Gently invert tube 10 times immediately after draw. DO NOT SHAKE.
- Allow blood to clot 30 minutes.
- Centrifuge at 1300 rcf for 10 minutes.
Patient Preparation: Patients should not have already received Vitamin B12 replacement therapy.
Transport: Store serum at 2°C to 8°C after collection and ship the same day per packaging instructions provided with the Cleveland HeartLab, Inc. shipping box.
Ambient (15-25°C): 7 days
Refrigerated (2-8°C): 30 days
Frozen (-20°C): 1 year
Deep Frozen (-70°C): 1 year
Causes for Rejection: Specimens other than serum; improper labeling; samples not stored properly; samples older than stability limits
Methodology: High Performance Liquid Chromatography/Mass Spec (LC/MS)
Turn Around Time: 2 – 7 days
Intended Use: Confirmation of vitamin B12 deficiency when vitamin levels are equivocal.