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Carnitine, Free and Total, Urine
Test Code39896
CPT Codes
82379<br>Restricted Client Code
Preferred Specimen
5 mL random urine collected in a urine container
Minimum Volume
2 mL
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 1 month
Refrigerated: Unacceptable
Frozen: 1 month
Methodology
Tandem Mass Spectometry
FDA Status
Test developed and characteristics determined by ARUP Laboratories
Setup Schedule
Set up: Tues; Report available: 2-9 days
Reference Range
Carnitine, Free, Urine:
0-5 months: 16-922 umol/g creatinine
6-23 months: 37-1066 umol/g creatinine
2 years and older: 7-407 umol/g creatinine
Carnitine, Total, Urine:
0-5 months: 160-1552 umol/g creatinine
6-23 months: 231-1710 umol/g creatinine
2 years and older: 73-731 umol/g creatinine
Carnitine, Esterified, Urine:
0-5 months: 138-525 umol/g creatinine
6-23 months: 175-613 umol/g creatinine
2 years and older: 55-317 umol/g creatinine
Carnitine, E/F Ratio, Urine:
0-5 months: 0.4-6.8
6-23 months: 0.4-5.0
2 years and older: 0.5-7.3
0-5 months: 16-922 umol/g creatinine
6-23 months: 37-1066 umol/g creatinine
2 years and older: 7-407 umol/g creatinine
Carnitine, Total, Urine:
0-5 months: 160-1552 umol/g creatinine
6-23 months: 231-1710 umol/g creatinine
2 years and older: 73-731 umol/g creatinine
Carnitine, Esterified, Urine:
0-5 months: 138-525 umol/g creatinine
6-23 months: 175-613 umol/g creatinine
2 years and older: 55-317 umol/g creatinine
Carnitine, E/F Ratio, Urine:
0-5 months: 0.4-6.8
6-23 months: 0.4-5.0
2 years and older: 0.5-7.3
Clinical Significance
Useful in the diagnosis of primary carnitine deficiency (carnitine uptake defect) in conjunction with free and total plasma carnitine.
