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) (5) Sample Type Blood (2) Serum or Plasma (3) (-) Tissue (1) (-) Urine (4) Test Area Therapeutics (5) Test Category Analgesics (1) Antianxiety (3) Antiarrhythmics (1) Anticholinergics (1) Antidepressants (4) Antihistamines (4) Antihypertensives (1) (-) Antitussives/Cough Suppressants (5) Diuretics (1) Drugs of Abuse (11) Drugs of Abuse, Therapeutics (4) Industrial/Environmental Toxins (2) NPS/Designer Drugs (3) Pesticides/Insecticides (1) Potassium Channel Blockers (1) Solvents (2) Stimulants (1) Volatiles (1) Test Sub-Category Other (5) Test Test Name 2915TI Dextro/Levo Methorphan, Tissue 2915U Dextro / Levo Methorphan - Total, Urine 2917U Dextromethorphan and Metabolite Ratio - Total, Urine 9205U Dextro / Levo Methorphan Screen - Total, Urine 9206U Dextrorphan / Levorphanol Screen - Total, Urine