Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Headspace Gas Chromatography (GC) (2) Sample Type (-) Blood (2) Serum or Plasma (2) Test Area Exposure (2) Test Category Herbicides (1) (-) Solvents (2) Volatiles (3) Test Sub-Category Organic (2) Test Test Name 2270B Heptane, n-, Blood 2290B Hexane, n-, Blood