Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (2) Serum or Plasma (1) Urine (2) Test Area Therapeutics (2) Test Category Analgesics (2) Anesthetics (3) Antianxiety (1) Antiarrhythmics (2) Antidepressants (7) (-) Antiepileptics/Antiseizures (2) Antihistamines (2) Antipsychotics (4) Muscle Relaxants (1) Sedative/Hypnotics (2) Vasodilators (1) Test Sub-Category Other (1) Succinimide (1) Test Test Name 9171B Ethosuximide Screen, Blood 9233B Phensuximide Screen, Blood