Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (3) Serum or Plasma (5) (-) Tissue (1) Urine (5) Test Area Therapeutics (1) Test Category Antiarrhythmics (1) Antihistamines (1) (-) Antitussives/Cough Suppressants (1) Test Sub-Category Other (1) Test Test Name 2915TI Dextro/Levo Methorphan, Tissue