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) Anesthetics (4) Antidepressants (6) Antiepileptics/Antiseizures (2) Antihistamines (2) Antihypertensives (2) Antimicrobials (2) Antiparkinsons (2) Antipsychotics (4) Cholinesterase Inhibitors (2) Depressants (2) Other (1) Sedative/Hypnotics (1) Solvents (2) Terpenes (2) Volatiles (4) Test Sub-Category Other (2) Test Test Name 4003B Propylene Glycol, Blood 4003SP Propylene Glycol, Serum/Plasma