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) Fluid (1) (-) Serum or Plasma (1) (-) Urine (1) Test Area Therapeutics (2) Test Category Alcohols (5) Anesthetics (2) Antianxiety (2) Antiarrhythmics (3) (-) Antidiabetics (2) Antiepileptics/Antiseizures (1) Antineoplastics (1) Antipsychotics (2) Antithyroids (1) Carbonic Anhydrase Inhibitors (1) Hallucinogens (10) Herbicides (1) Immunosuppressants (3) Metals/Elements (11) Muscle Relaxants (3) NMDA Antagonists (1) Pesticides/Insecticides (2) Sedative/Hypnotics (2) Solvents (4) Stimulants (5) Volatiles (7) Test Sub-Category (-) Other (2) Test Test Name 2740SP Metformin, Serum/Plasma 2740U Metformin, Urine