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) Headspace Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (2) Test Category (-) Alcohols (2) Analgesics (6) Anesthetics (2) Anticholinergics (2) Antidepressants (4) Antiepileptics/Antiseizures (4) Antihistamines (1) Antimicrobials (1) Cholinesterase Inhibitors (2) Pesticides/Insecticides (2) Solvents (2) Vasodilators (2) Volatiles (6) Test Sub-Category Other (2) Test Test Name 4003B Propylene Glycol, Blood 4003U Propylene Glycol, Urine