T281

Test CODE NAME

T281

Carnitine, Free

Methodology: Tandem mass Spectrometry
Performed: Tue-Sat
Reported: 2-5 days
Specimen Required: Collect: Green (sodium or lithium heparin) OR Plain Red - 0.5 ml plasma or serum.
Specimen Preparation: Allow specimen to clot completely at room temperature . Separate serum or plasma from cells  ASAP or within 2 hours of collection. Transfer  serum or plasma to a Standard Transport Tube and freeze immediately. 
Avoid hemolysis. 
Storage/Transport Temperature: CRITICAL FROZEN. 
Unacceptable Conditions: Room temperature specimens. Specimens that have been refrigerated for greater than 12 hours. 
Stability: After separation from cells: Ambient: Unacceptable; Refrigerated: 12 hours; Frozen: 1 month (avoid repeated freeze/thaw cycles)
Note: This test is approved for NY .
Performing Lab
ARUP Laboratory
CPT Code(s): 83789