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) Sample Type Blood (2) Serum or Plasma (1) (-) Urine (2) Test Area Therapeutics (2) Test Category Antiepileptics/Antiseizures (2) Test Sub-Category Barbiturates (1) Other (3) (-) Succinimide (2) Test Test Name 3680U Phensuximide, Urine 9233U Phensuximide Screen, Urine