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Test Code
UCAR
Test Name
Carnitine, Free and Total, Urine
CPT Codes
82379
Included Tests
  • Total
  • Free (FC)
  • AC/FC Ratio
  • Interpretation
Expected Turnaround Time
2 - 9 days
Clinical Utility

Evaluation of patients with a clinical suspicion of a wide range of conditions including organic acidemias and fatty acid oxidation disorders.

Monitoring carnitine treatment
Specimen and Container Info

Specimen Type: Random Urine

  

Collection Container: Plastic Urine Container (Preservative Free) 

    

Desired Specimen Volume: 1.5 mL
Collection Instructions
  1. Collect random urine in a plastic urine container (preservative free).
Processing and Submission Instructions
  1. Transfer 1.5 mL of urine to a LabCorp PP transpak frozen purple tube.
Transport Instructions

Transport to the laboratory frozen. 
Stability Requirements

Refrigerated

 72 hours

Frozen

1 year
Methodology
Flow Injection Analysis-Tandem Mass Spectrometry (FIA-MS/MS)
Reference Intervals

 See patient report.
Limitations

Increased values may be obtained after carnitine supplementation or meat consumption.
Alternate Names
  • Urinary Carnitine, Quantitative
  • L-Carnitine
  • Carnitine Free and Total, Urine
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Routine, 1 time per week
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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