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) (11) Headspace Gas Chromatography (GC) (3) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (5) Sample Type Blood (2) (-) Serum or Plasma (1) Urine (1) Test Area Drugs of Abuse (8) (-) Exposure (1) Therapeutics (38) Test Category Pesticides/Insecticides (1) Test Sub-Category Herbicides (1) Test Test Name 1789SP Diquat, Serum/Plasma