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) Serum or Plasma (1) Test Area (-) Therapeutics (2) Test Category (-) Antihypertensives (2) Test Sub-Category Alpha Blockers (2) (-) Beta Blockers (2) Diuretics (2) Test Test Name 4482B Timolol, Blood 4482SP Timolol, Serum/Plasma