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