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) (2) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type (-) Blood (2) Serum or Plasma (2) Test Area Exposure (2) Test Category Herbicides (1) Pesticides/Insecticides (1) Test Sub-Category Herbicides (1) Other (1) Test Test Name 1789B Diquat, Blood 3325B Paraquat, Blood