Test directory: Carnitine

Ordering Code 5452
Test Name Carnitine
Preferred Specimen Serum
Preferred Container SST (Gold)
Other Specimen/Container Plasma in Sodium Heparin (Green), Serum in Plain (Red)
Optimum Volume 1 mL
Collection Instructions Refrigerate immediately
Avoid hemolysis
Handling Instructions Separate and freeze immediately
Transport Requirements Oahu: Frozen
Airline: Frozen
Specimen Stability Ambient: 5 Hours
Refrigerated: 5 Days
Frozen: 1 Month
Rejection Criteria Ambient, Hemolyzed
Avail. Stat NO
Analytic Time Up to 7 Days
Methodology Chromatography/Mass Spectrometry
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of November 6, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Carnitine, Total ALL See report.
Carnitine, Free ALL See report.
Carnitine Esters ALL See report.
Esterified/Free Ratio ALL See report.