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 Analgesics (2) Antacids (1) Antianxiety (1) Antidepressants (1) Antiemetics (1) Antiepileptics/Antiseizures (3) Antigout Agents (1) Antihistamines (4) (-) Antihypertensives (2) Antimicrobials (1) Antipsychotics (1) Benzodiazepines (1) Diuretics (2) Immunosuppressants (1) Muscle Relaxants (2) Other (2) Psychoactives (3) Sedative/Hypnotics (2) Stimulants (3) Test Sub-Category Alpha-2 Adrenergic Agonists (1) Diuretics (1) Test Test Name 1250B Chlorthalidone, Blood 1275B Clonidine, Blood