Days Set Up
Tuesday, Friday
Analytic Time

3 - 5 days

MiChart Code
Methylmalonic Acid
Soft Order Code

Test Updated:


Methylmalonate, Serum
MMA, Serum

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Liquid Chromatography-Tandem Mass Spectometry (LC-MS/MS)

Test Usage

Used for evaluating patients displaying symptoms of methylmalonic acidemia and related disorders. And used for evaluating patients displaying symptoms of vitamin B12 deficiency (cobalamin deficiency).

Reference Range

Less than or equal to 0.40 umol/L.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect blood in a red top or SST tube.

Collection Offsite

Collect blood in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. Grossly hemolytic or grossly lipemic specimens are unacceptable. Specimens can be stored or shipped at ambient temperature for a maximum of 3 days. Samples can usually be shipped at ambient temperature; however, during high summer temperatures, please ship the sample with ice packs.

Yellow Top Tube
Normal Volume
2 mL serum
Minimum Volume
1 mL serum

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.