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) Sample Type Blood (1) (-) Serum or Plasma (1) (-) Urine (1) Test Area (-) Exposure (2) Test Category Alcohols (4) Chemicals (1) Herbicides (1) Metals/Elements (6) Perfluorinated Compounds (3) Pesticides/Insecticides (2) Plasticizers (1) (-) Solvents (2) Volatiles (4) Test Sub-Category Other (2) Test Test Name 4030SP Pyridine, Serum/Plasma 4030U Pyridine, Urine