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) (1) Sample Type Blood (2) Serum or Plasma (2) (-) Urine (1) Test Area (-) Therapeutics (1) Test Category Analgesics (2) Antacids (1) Antianxiety (1) Antidepressants (4) Antiepileptics/Antiseizures (3) Antihistamines (3) (-) Antihypertensives (1) Antimicrobials (1) Antipsychotics (5) Muscle Relaxants (5) Sedative/Hypnotics (5) Stimulants (2) Test Sub-Category Alpha-2 Adrenergic Agonists (1) Test Test Name 1275U Clonidine, Urine