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 (4) Serum or Plasma (4) (-) Urine (2) Test Area Therapeutics (2) Test Category Analgesics (1) Antacids (1) Antianxiety (2) Anticholinergics (1) Antidepressants (3) Antiepileptics/Antiseizures (1) Antihistamines (4) (-) Antihypertensives (2) Antimicrobials (1) Antipsychotics (1) Benzodiazepines (1) Industrial/Environmental Toxins (1) Muscle Relaxants (1) NPS/Designer Drugs (4) Sedative/Hypnotics (4) Stimulants (3) Test Sub-Category Alpha-2 Adrenergic Agonists (1) Calcium Channel Blockers (1) Test Test Name 1275U Clonidine, Urine 1640U Diltiazem, Urine