Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Gas Chromatography (GC) (1) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (3) Fluid (2) Serum or Plasma (3) Tissue (2) (-) Urine (2) Test Area Therapeutics (2) Test Category Analgesics (1) Antianxiety (2) Anticholinergics (1) Antidepressants (3) (-) Antihistamines (2) Antihypertensives (1) Antitussives/Cough Suppressants (4) Diuretics (1) Industrial/Environmental Toxins (1) NPS/Designer Drugs (3) Pesticides/Insecticides (1) Potassium Channel Blockers (1) Solvents (2) Stimulants (1) Volatiles (1) Test Sub-Category Other (2) Test Test Name 1760U Diphenhydramine, Urine 1817U Doxylamine, Urine