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 (2) Serum or Plasma (2) Urine (2) Test Area Therapeutics (2) Test Category Antiepileptics/Antiseizures (1) Antihypertensives (1) Test Sub-Category (-) Alpha-2 Adrenergic Agonists (1) Antivirals (1) (-) GABA Analogues (1) Other (6) Sulfonylureas (1) Toxic Elements (2) Test Test Name 2143B Gabapentin, Blood 2186B Guanfacine, Blood