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Test Code Carnitine Plas (LAB5750) Carnitine, Free and Total, Plasma

Performing Laboratory

St. Louis Children's Hospital (SLCH)

Methodology

Electrospray Tandem Mass Spectrometry (ESI-MS/MS)

Specimen Requirements

Preferred: Mint green-top (lithium heparin)

 

                 Centrifuge specimen to separate.  Aliquot sample into a plastic conical tube and freeze.

 

Acceptable: Gold/Red SST, Plain Red , or Dark green-top (sodium heparin)

 

 

Reference Values

Carnitine Total:           35-80 mcmol/L

Carnitine Free:           20-65 mcmol/L

Acylcarnitine Total:     5-30 mcmol/L

AC/FC Ratio:              0.1-0.8

 

CPT Coding

82379

Day(s) Test Set Up

Day(s) Test Set Up:   Monday-Friday

Cut-off time:               0430

Turnaround Time;       3-5 Days

Specimen Transport Temperature

Frozen