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CARRU / CARNU-M
CARNITINE, RANDOM URINE

Test Code CARRU / CARNU-M 
Test CARNITINE, RANDOM URINE 
Methodology Tandem Mass Spectrometry (MS/MS) 
Description Useful for the evaluation of patients with a clinical suspicion of a wide range of inborn errors of metabolism, especially organic acidemias and fatty acid oxidation disorders including primary carnitine deficiency 
Specimen 1.5 mL (minimum: 1.0 mL) from a random urine collection. Send specimen FROZEN in a plastic, 13-mL urine tube. 
Reference Values FREE
77-214 nmol/mg of creatinine

TOTAL
180-412 nmol/mg of creatinine

RATIO
Acyl to free: 0.7-3.4 

Analytic Time 2 Days 
Day(s) Test Set Up Thursday 
CPT Code(s) 82379