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HelpCarnitine, Free and Total, Plasma
Additional Codes
LAB5750
Performing Laboratory
St. Louis Children's Hospital Laboratory
Methodology
Electrospray Tandem Mass Spectrometry (ESI-MS/MS)
Specimen Requirements
Specimen Type: Plasma
Container/Tube: Mint-green top (lithium heparin gel)
Specimen Volume: Full tube
Alternative Specimen Type: Plasma
Alternative Container/Tube: Gold top, serum gel, Red top tube or Dark green sodium heparin tube
Specimen Minimum Volume: 0.6 mL; If collected in microtainer®, container MUST be full.
Specimen Transport Temperature
Ambient
Day(s) Test Set Up
|
Day(s) Test Set Up: |
Monday-Friday |
|
Cut-off time: |
0430 |
|
Turnaround Time: |
3-5 days |
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 |
Specimen Stability Information
Analyte Stability: Ambient: 1 hour Refrigerated: NA Frozen (processed): Indefinitely