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) (21) Sample Type Blood (9) Serum or Plasma (11) Urine (1) Test Area Drugs of Abuse (9) Impairment (2) Postmortem (19) (-) Therapeutics (21) Test Category Antihypertensives (6) Diuretics (10) Vasodilators (5) Test Sub-Category Alpha-2 Adrenergic Agonists (6) Alpha-2 Adrenergic Antagonists (3) (-) Alpha Blockers (6) Beta Blockers (28) Calcium Channel Blockers (12) Diuretics (13) (-) Other (13) (-) Thiazides (2) Vasodilators (1) Your search has returned no tests.