Test Overview
Test Methodology
Flow Injection Analysis-Tandem Mass Spectrometry (FIA-MS/MS)
Test Usage
Evaluation of patients with a clinical suspicion of a wide range of conditions including organic acidemias, fatty acid oxidation disorders, and primary carnitine deficiency.
Reference Range *
Interpretive report provided.
Test Limitations
Increased values may be obtained after carnitine supplementation or meat consumption.
Test Details
Days Set Up
Monday - Friday
Analytic Time
2 - 5 days
Soft Order Code
CARN
MiChart Code
Carnitine, Plasma
Synonyms
- Acylcarnitine
- Carnitine, Free and Total
- Carnitine, Free and Total
- BCARNFT
- AC/FC Ratio
- L-Carnitine
- CARN
- Carnitine, Plasma
Laboratory
Sendout
Reference Laboratory
Mayo CARN (8802)
Section
Special Testing
Specimen Requirements
Collection
Collect specimen in a green top tube (preferred); lavender top tube is also acceptable. Centrifuge, aliquot plasma into a plastic vial and freeze.
Normal Volume
0.5 mL plasma
Minimum Volume
0.3 mL plasma
Additional Information
Test includes Total Carnitine, Free Carnitine, Acylcarnitine, and AC/FC Ratio. Test sent to Mayo Medical Laboratories.
Billing
CPT Code
82379
Fee Code
20459
LOINC
2043-8
NY State Approved
No