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 (3) Fluid (2) Serum or Plasma (3) (-) Urine (2) Test Area (-) Therapeutics (2) Test Category Analgesics (8) Antacids (1) Antianxiety (1) Antidepressants (3) (-) Antidiabetics (1) Antiepileptics/Antiseizures (1) Antihypertensives (1) Antipsychotics (1) Immunosuppressants (1) (-) Muscle Relaxants (1) Sedative/Hypnotics (3) Stimulants (2) Test Sub-Category Other (2) Test Test Name 2720U Metaxalone, Urine 2740U Metformin, Urine