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) (1) Sample Type (-) Blood (1) Serum or Plasma (2) Test Area Therapeutics (1) Test Category (-) Antithrombotics (1) Test Sub-Category Alpha-2 Adrenergic Antagonists (1) Alpha Blockers (1) (-) Anticoagulants (1) Beta Blockers (2) Calcium Channel Blockers (1) Diuretics (1) Test Test Name 4800B Warfarin, Blood