Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzymatic Assay (EZA) (1) Gas Chromatography (GC) (4) Gas Chromatography/Mass Spectrometry (GC/MS) (1) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Serum or Plasma (1) Test Area Therapeutics (1) Test Category Analgesics (1) Antidepressants (1) Antiepileptics/Antiseizures (1) Antihypertensives (1) (-) Antimicrobials (1) NPS/Designer Drugs (1) Sedative/Hypnotics (2) Stimulants (2) Test Sub-Category Antibiotics (1) Test Test Name 1959SP Ethambutol, Serum/Plasma