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) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (1) (-) Serum or Plasma (2) Test Area Therapeutics (2) Test Category (-) Antithrombotics (2) Test Sub-Category (-) Anticoagulants (2) Test Test Name 4114SP Rivaroxaban, Serum/Plasma 4800SP Warfarin, Serum/Plasma