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) Anticoagulants (4) Benzodiazepines (4) Calcium Channel Blockers (2) Cannabinoids (1) Cardiac Glycosides (2) Designer Benzodiazepines (2) Herbicides (2) NSAIDs (2) Opiates/Opioids (4) Other (17) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (4) Thiazides (2) Test Test Name 1815B Doxazosin, Blood 1815SP Doxazosin, Serum/Plasma