Laboratory Test Detail

Last Updated: July 14, 2024 @ 9:13 am


Carnitine, Free and Total

  • One Green Top (Li Heparin)

Also Acceptable:
  • One Green Top (Na Heparin)
  • One Red Top
  • 0.5 mL (Min:0.2 mL) Plasma . Submit Frozen. Submit in a Standard Transport Tube.

Also Acceptable:
  • 0.5 mL (Min:0.2 mL) Serum . Submit Frozen. Submit in a Standard Transport Tube.
Special Handling:
  • Avoid Repeated Freeze/Thaw Cycles
  • Critical Frozen
  • Separate aliquot required for each frozen test ordered
  • Separate from cells ASAP
Rejection Criteria:
  • Room temperature specimens. Specimens that have been refrigerated for greater than 12 hours.
Stability:Ambient: Unacceptable; Refrigerated: 12 Hour(s); Frozen: 1 Month(s); Incubated: Unacceptable
  • Tandem Mass Spectrometry
Performed:Tuesday, Wednesday, Thursday, Friday, Saturday
Reported:2-5 Day(s)
CPT Codes:
  • 83789
Interpretive Data:Please see report for interpretive data.
  • 90321 - CARNITINE, FREE
  • 90322 - CARNITINE, TOTAL
  • 90323 - CARNITINE, ESTER
  • 90324 - E/F RATIO
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