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