Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) Gas Chromatography (GC) (4) Headspace Gas Chromatography (GC) (4) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Serum or Plasma (2) Test Area Therapeutics (2) Test Category Analgesics (12) Antidepressants (8) (-) Antidiabetics (2) Antiepileptics/Antiseizures (6) Antihypertensives (6) Antimicrobials (3) Antineoplastics (2) Antipsychotics (2) Antirheumatics (2) Bronchodilators (4) Cholinesterase Inhibitors (2) Diuretics (2) Immunosuppressants (5) Muscle Relaxants (2) Sedative/Hypnotics (5) Stimulants (3) Sympathomimetic Amines (3) Vasodilators (2) Test Sub-Category Sulfonylureas (2) Test Test Name 4490SP Tolazamide, Serum/Plasma 4500SP Tolbutamide, Serum/Plasma