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Test Code
MMAUR
Test Name
Methylmalonic Acid, Urine
CPT Codes
83921
Included Tests
  • Creatinine(Crt), U
  • Methylmalonic Acid, U
  • MMA - Normalized
Expected Turnaround Time
4 - 8 days
Clinical Utility

Diagnose cobalamin (vitamin B12) deficiency.
Specimen and Container Info

Specimen Type: Random Urine

Collection Container: Plastic Urine Container (Preservative Free)

Desired Specimen Volume: 5 mL
Collection Instructions
  1. Collect random urine in a plastic container (preservative free).
Processing and Submission Instructions
  1. Transfer 5 mL of urine to clear aliquot tubes (screw caps).
Transport Instructions

Transport to the laboratory refrigerated.
Stability Requirements

Room Temperature

14 days

Refrigerated

14 days

Frozen

19 days

Freeze/Thaw Cycles

Stable x3
Methodology
Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS)
Reference Intervals

See patient report.

Reference Lab
Labcorp Of America Holdings
Testing Schedule
Varies
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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