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) (2) Sample Type Blood (1) Serum or Plasma (1) Test Area Therapeutics (2) Test Category Anticholinergics (3) Antidiabetics (4) Antidiarrheals (2) Antiepileptics/Antiseizures (16) Antihistamines (9) Antineoplastics (1) Antipsychotics (9) Antitussives/Cough Suppressants (7) Carbonic Anhydrase Inhibitors (1) Cholinesterase Inhibitors (2) Diuretics (1) Emetics (4) Expectorants (3) Hallucinogens (10) Hydrocarbons (1) Immunosuppressants (5) Laxatives (1) Muscle Relaxants (10) (-) NMDA Antagonists (2) Retinoids (2) Sedative/Hypnotics (5) Stimulants (4) Volatiles (2) Test Sub-Category (-) Other (2) Test Test Name 2581B Memantine, Blood 2581SP Memantine, Serum/Plasma