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 Analgesics (9) Antidepressants (2) (-) Antidiabetics (2) Antiemetics (2) Antiepileptics/Antiseizures (1) Antihypertensives (3) Antimicrobials (2) Antipsychotics (2) Carbonic Anhydrase Inhibitors (1) Hallucinogens (4) Immunosuppressants (3) Muscle Relaxants (3) NMDA Antagonists (1) NPS/Designer Drugs (2) Sedative/Hypnotics (4) Solvents (1) Stimulants (6) Test Sub-Category Other (2) Test Test Name 2740SP Metformin, Serum/Plasma 2740U Metformin, Urine