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 (5) (-) Fluid (1) Serum or Plasma (3) Urine (2) Test Area Therapeutics (1) Test Category Antianxiety (3) (-) Antiepileptics/Antiseizures (1) Depressants (9) Diagnostic Aids (1) Drugs of Abuse (8) Drugs of Abuse, Therapeutics (3) Sedative/Hypnotics (12) Therapeutics (6) Volatiles (3) Test Sub-Category Barbiturates (1) Test Test Name 3900FL Primidone, Phenobarbital and PEMA, Fluid