- Test Name
- Methylmalonic acid
- Aliases
- MMA; Methylmalonate
- Provincial Mnemonic
- MMALO
- LOINC Test Code
- 13964-2
- Description and Primary Use
- Second line test to diagnose clinical vitamin B12 deficiency for patients with low normal and low vitamin B12.
- Reorder interval
- 180 Days
- TAT
- 14 Days
- Test Cost
- Not Available
- Tier
- 3 - Special Authorization Required (See Required Consultation)
- Ordering Requirements (Restrictions / Conditions)
Reflex testing only; based on low normal or low vitamin B12 levels. (See Required Consultation)
- Required Consultations
- Contact the Biochemist-on-Call at (709-697-2306)
- Algorithms and Guidelines
[Add links to Vitamin B12 testing algorithm, and Vitamin B12 status testing guideline pdfs]
- Special Patient Preparation
None
- Special Collection / Transport / Processing Requirements
No special requirement
- Criteria for Rejection
Based on specimen condition and stability
- Laboratory Service Area
- Clinical Chemistry
- Performing Laboratory / Site
- Category 4 Laboratory (HSC only)
- Last Updated
- 09-Sep-19