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) (12) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (28) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (2) Sample Type Blood (1) Serum or Plasma (1) Test Area (-) Exposure (2) Test Category Industrial/Environmental Toxins (1) Other (1) (-) Pesticides/Insecticides (2) Test Sub-Category Herbicides (2) Test Test Name 1789B Diquat, Blood 1789SP Diquat, Serum/Plasma