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 (-) Therapeutics (1) Test Category Analgesics (2) Antianxiety (3) Antidepressants (1) Antiepileptics/Antiseizures (1) Antihypertensives (1) (-) Antimicrobials (1) Immunosuppressants (1) Sedative/Hypnotics (7) Stimulants (7) Test Sub-Category Antibiotics (1) Test Test Name 1959SP Ethambutol, Serum/Plasma