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