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This is a sendout test. Please note that turnaround time is defined as the anticipated time from set up day to results release.
S51992: Carnitine, LC/MS,MS [70107X] Print View
Carnitine, Total LC/MS/MS  Male < 18 years: 32 - 62
Female < 18 years: 28 - 59
Male >= 18 years: 30 - 70
Female >= 18 years: 25 - 58 
umol/L 
Carnitine, Free LC/MS/MS  Male < 18 years: 25 - 54
Female < 18 years: 19 - 51
Male >= 18 years: 23 - 59
Female >= 18 years: 19 - 48 
umol/L 
Carnitine, Esters LC/MS/MS  Male < 18 years: 4 - 12
Female < 18 years: 3 - 16
Male >= 18 years: 4 - 15
Female >= 18 years: 4 - 13 
umol/L 
Esterified/Free Ratio LC/MS/MS  Male < 18 years: 0.0 - 0.3
Female < 18 years: 0.0 - 0.4
Male >= 18 years: 0.1 - 0.3
Female >= 18 years: 0.1 - 0.4 
 

PRIMARY
1 Serum 1 (0.4) mL   Refrigerated - 5 Day(s)/Room Temperature - 5 Hour(s)/Frozen - 30 Day(s)  
ALTERNATE
  Plasma Heparinized 1 (0.4) mL   Refrigerated - 5 Day(s)/Frozen - 30 Day(s)/Room Temperature - 5 Hour(s)  

Serum carnitine analysis is useful in the diagnosis and monitoring of patients with carnitine deficiency (either primary or secondary). Primary carnitine deficiency is an autosomal recessivelly inherited genetic condition that affects carnitine uptake by cells and tissues through a defect in the plasma membrane carnitine transporter. Secondary carnitine deficiency can be seen in some disease states or in patients on carnitine-poor diets, but is also seen in a number of metabolic disorders. In these disorders, carnitine complexes with the accumulated substrate of the blocked metabolic step, and the resulting acylcarnitine ester is excreted in the urine, leading to a depletion of carnitine in the patient.

Collect blood sample in serum (red-top) tube. Separate serum by
centrifugation. Avoid hemolysis. Remove serum and place in plastic
tube. Freeze immediately after separation. Patient should be in a
well-fed state.
Setup Schedule
Monday, Wednesday, Friday-Saturday

Reported (Analytical Time)
3 days

CPT Code
82379

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.






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