Specimen Collection
5 mL Collect Urine (Random)Random urine in plain container, no preservative
Reference Intervals
Free carnitine= 1.2 - 72.5 umol/mmol creatinine
Total carnitine= 3.9 - 140.0 umol/mmol creatinine
Acylcarnitine/free carnitine ratio = 0.4 -2 .8
UOM: 20%
Turnaround Time: Within 2 weeks
Assay Method
Tandem Mass spectrometry. Effective from June 2018.
Assay Method
Diagnostic Use and Interpretation
Taken simultaneously with plasma carnitine, the urine carnitine excretion can be used to help in the diagnosis of carnitine uptake or transporter deficiency. The fractional excretion should be increased in this condition.
Contact Information
Dr Callum Wilson,
Metabolic Physician ext 25867 or mobile 021 555 392
Dr Emma Glamuzina,
Metabolic Physician ext 23448 or mobile 021 403 617
Specimen Transport Instructions for Referring Laboratories
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Instructions for Referral to LabPlus
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Aliquot Instructions
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500 uL
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Aliquot Transport to LabPlus
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Frozen
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