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 (1) Serum or Plasma (1) Tissue (1) (-) Urine (1) Test Area Therapeutics (1) Test Category Antitussives/Cough Suppressants (1) Test Sub-Category (-) Other (1) Test Test Name 2915U Dextro / Levo Methorphan - Total, Urine