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 Acids (2) (-) Alcohols (2) Analgesics (1) Anesthetics (2) Antidepressants (4) Antiepileptics/Antiseizures (2) Antihistamines (1) Antihypertensives (2) Antimicrobials (1) Antiparkinsons (2) Antipsychotics (4) Cholinesterase Inhibitors (2) Depressants (1) Solvents (3) Terpenes (2) Volatiles (2) Test Sub-Category Other (2) Test Test Name 4003SP Propylene Glycol, Serum/Plasma 4003U Propylene Glycol, Urine