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Labcorp Oklahoma, Inc.
Test Directory


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Mexiletine, Serum/Plasma

Order Name Mexiletine S/P
Test Number: 4310450
Revision Date 12/12/2022
Test Name Methodology LOINC Code
Mexiletine, Serum/Plasma
High-pressure liquid chromatography (HPLC)  
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 3 mL (1.1 mL) Serum Clot Activator (Red Top, No-Gel) Room Temperature
Alternate 1 3 mL (1.1 mL) Plasma Lithium Heparin (Dark Green Top / No-Gel) Room Temperature
Alternate 2 3 mL (1.1 mL) Plasma EDTA (Lavender Top) Room Temperature
Instructions Specimen Type: Red-top tube, lavender-top (EDTA) tube or green-top (heparin) tube. Transfer separated serum or plasma to a plastic transport tube. DO NOT USE A GEL-BARRIER TUBE. The use of gel-barrier tubes is not recommended due to slow absorption of the drug by the gel. Depending on the specimen volume and storage time, the decrease in drug level due to absorption may be clinically significant.
Specimen Storage: Room Temperature
Specimen Stability: Ambient: 7 days, Refrigerated : 14 days, Frozen: 14 days
GENERAL INFORMATION
Expected TAT 2 - 4 days one working day.  
Performing Labcorp Test Code 716076 
Notes Labcorp Test Code: 716076
CPT Code(s) 80375
Lab Section Reference Lab