Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (9) Headspace Gas Chromatography (GC) (2) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Spectrophotometry (SP) (1) Sample Type (-) Blood (1) Serum or Plasma (3) Test Area Drugs of Abuse (3) (-) Exposure (1) Therapeutics (16) Test Category Pesticides/Insecticides (1) Test Sub-Category Herbicides (1) Test Test Name 1789B Diquat, Blood