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 (2) Serum or Plasma (2) Test Area Therapeutics (2) Test Category Acids (2) Analgesics (3) Antiarrhythmics (2) Antidepressants (6) (-) Antiepileptics/Antiseizures (2) Antihistamines (1) Antihypertensives (2) Antimicrobials (1) Antipsychotics (1) Depressants (3) Metals/Elements (2) Other (2) Sedative/Hypnotics (2) Volatiles (1) Test Sub-Category Other (2) Test Test Name 2069B Felbamate, Blood 2136B Fosphenytoin as Metabolite, Blood