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 (1) Serum or Plasma (1) Test Area (-) Therapeutics (2) Test Category Antiepileptics/Antiseizures (10) Antigout Agents (3) Antihistamines (10) (-) Antihypertensives (2) Antipsychotics (5) Depressants (2) Diuretics (4) Immunosuppressants (1) Laxatives (1) Muscle Relaxants (14) Sedative/Hypnotics (6) Test Sub-Category Alpha-2 Adrenergic Agonists (3) (-) Diuretics (2) Test Test Name 1250B Chlorthalidone, Blood 1250SP Chlorthalidone, Serum/Plasma