Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (3) (-) Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (4) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (3) Sample Type Blood (1) Serum or Plasma (1) Test Area Therapeutics (2) Test Category Analgesics (6) (-) Antiarrhythmics (2) Anticholinergics (3) Antidepressants (10) Antiepileptics/Antiseizures (4) Antihistamines (1) Antineoplastics (2) Herbicides (1) Muscle Relaxants (3) Pesticides/Insecticides (7) Solvents (2) Terpenes (1) Vasodilators (2) Volatiles (12) Test Sub-Category Other (2) Test Test Name 3055B Mexiletine, Blood 3055SP Mexiletine, Serum/Plasma