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