Days Set Up
Tuesday
Analytic Time

7 - 12 days

MiChart Code
Carnitine, Urine (Mayo)
Soft Order Code
CARNU

Test Updated:

Synonyms

Carnitine, U
CARN RATIO
CRNU INTRP
FREE_CARN
TOTAL_CARN
RATIO: ACYL TO FREE
Interpretation
FREE CARNITINE
TOTAL CARNITINE

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Test Overview

Test Methodology

Flow Injection Analysis-Tandem Mass Spectrometry (FIA-MS/MS)

Test Usage

Evaluation of patients with clinical suspiccion of a wide range of inborn errors of metabolism, especially organic acidemias and fatty acid oxidation disorders including primary carnitine deficiency.

Reference Range

Free Carnitine: 77 - 214 nmol/g creatinine; Total Carnitine: 180 - 412 nmol/g creatinine; Ratio (Acyl to Free): 0.7 - 3.4. Interpretive report provided.

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

Specimen Requirements

Collection Instructions

Collect random urine and freeze.

Normal Volume
1.5 ml random urine
Minimum Volume
1.5 ml random urine

Billing Information

CPT Code
82379
Pro Fee Code
 
Insurance Auth Info
 
LOINC
 

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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.