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 Drugs of Abuse (3) (-) Therapeutics (2) Test Category Antihypertensives (2) Test Sub-Category Alpha-2 Adrenergic Agonists (3) Antibiotics (1) Antihistamines (3) Antimalarials (3) Benzodiazepines (16) CNS Stimulants (4) (-) Diuretics (2) NSAIDs (2) Opiates/Opioids (4) Other (36) Selective Serotonin Reuptake Inhibitors (SSRI) (5) Sulfonylureas (1) Test Test Name 1250B Chlorthalidone, Blood 1250SP Chlorthalidone, Serum/Plasma