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) (2) Sample Type Serum or Plasma (2) Test Area Therapeutics (2) Test Category (-) Antidiabetics (2) Antiparkinsons (3) Test Sub-Category Other (4) (-) Sulfonylureas (2) Test Test Name 4490SP Tolazamide, Serum/Plasma 4500SP Tolbutamide, Serum/Plasma