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 (11) Anesthetics (1) Antacids (1) Antianxiety (1) Antiarrhythmics (2) Antidepressants (3) (-) Antidiabetics (2) Antiemetics (1) Antiepileptics/Antiseizures (2) Antihypertensives (3) Antimicrobials (2) Antineoplastics (2) Antipsychotics (1) Antithyroids (1) Immunosuppressants (1) Muscle Relaxants (3) NMDA Antagonists (1) Sedative/Hypnotics (4) Stimulants (2) Test Sub-Category Other (2) Test Test Name 2740B Metformin, Blood 2740FL Metformin, Fluid