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 Serum or Plasma (1) Test Area Drugs of Abuse (6) (-) Therapeutics (1) Test Category Analgesics (7) Anesthetics (4) Antianxiety (3) Antiarrhythmics (3) Anticholinergics (7) Antidepressants (9) Antiepileptics/Antiseizures (2) (-) Antineoplastics (1) Antipsychotics (1) Depressants (6) Diuretics (2) Muscle Relaxants (4) Stimulants (3) Test Sub-Category Alkylating Agents (1) Test Test Name 0820SP Busulfan, Serum/Plasma