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) (1) Sample Type Blood (1) (-) Serum or Plasma (1) Urine (1) Test Area (-) Exposure (1) Test Category Acids (1) (-) Alcohols (1) Depressants (1) Solvents (1) Terpenes (1) Volatiles (1) Test Sub-Category Other (1) Test Test Name 4003SP Propylene Glycol, Serum/Plasma