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) (3) Sample Type (-) Blood (2) Serum or Plasma (2) (-) Urine (1) Test Area Therapeutics (3) Test Category Analgesics (4) Antacids (2) Antianxiety (2) Antidepressants (7) Antiemetics (1) Antiepileptics/Antiseizures (5) Antigout Agents (1) Antihistamines (7) (-) Antihypertensives (3) Antimicrobials (2) Antipsychotics (7) Benzodiazepines (2) Biomarkers (1) Depressants (1) Diuretics (2) Drugs of Abuse, Therapeutics (1) Gases (5) Immunosuppressants (1) Metals/Elements (14) Muscle Relaxants (6) Other (3) Pesticides/Insecticides (1) Psychoactives (6) Sedative/Hypnotics (9) Solvents (4) Stimulants (8) Terpenes (1) Volatiles (6) Test Sub-Category Alpha-2 Adrenergic Agonists (2) Diuretics (1) Test Test Name 1250B Chlorthalidone, Blood 1275B Clonidine, Blood 1275U Clonidine, Urine