Test ID MMAP Methylmalonic Acid, Quantitative, Plasma
Useful For
Evaluating children with signs and symptoms of methylmalonic acidemia
Evaluating individuals with signs and symptoms associated with a variety of causes of cobalamin (vitamin B12) deficiency
Method Name
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reporting Name
Methylmalonic Acid, QN, PSpecimen Type
PlasmaSpecimen Required
Container/Tube:
Preferred: Green top (sodium heparin)
Acceptable: EDTA
Specimen Volume: 1.5 mL
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Plasma | Refrigerated (preferred) | 48 days | |
Ambient | 48 days | ||
Frozen | 48 days |
Reference Values
≤0.40 nmol/mL
Day(s) and Time(s) Performed
Monday, Thursday; Continuously until 12 p.m.
Performing Laboratory

CPT Code Information
83921
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
MMAP | Methylmalonic Acid, QN, P | 13964-2 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
31927 | Methylmalonic Acid, QN, P | 13964-2 |
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.NY State Approved
YesForms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-Benign Hematology Test Request (T755)