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 (2) (-) Serum or Plasma (2) Urine (1) Test Area (-) Therapeutics (2) Test Category Antihypertensives (2) Test Sub-Category (-) Alpha-2 Adrenergic Agonists (1) Antibiotics (1) Antihistamines (1) Benzodiazepines (4) CNS Stimulants (1) (-) Diuretics (1) NSAIDs (1) Opiates/Opioids (1) Other (19) Phenothiazines (2) Selective Serotonin Reuptake Inhibitors (SSRI) (1) Sulfonylureas (1) Tricyclic (3) Test Test Name 1250SP Chlorthalidone, Serum/Plasma 1275SP Clonidine, Serum/Plasma