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 Alcohols (6) Analgesics (2) Anesthetics (1) Antianxiety (2) Antidepressants (1) Antiepileptics/Antiseizures (9) Antihypertensives (1) (-) Antimicrobials (1) Depressants (1) Immunosuppressants (1) NPS/Designer Drugs (3) Other (1) Pesticides/Insecticides (2) Sedative/Hypnotics (11) Solvents (9) Stimulants (7) Volatiles (2) Test Sub-Category Antibiotics (1) Test Test Name 1959SP Ethambutol, Serum/Plasma