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 Drugs of Abuse (38) Impairment (6) Postmortem (20) (-) Therapeutics (2) Test Category Anticholinergics (2) Test Sub-Category Other (2) Test Test Name 3957B Procyclidine, Blood 3957SP Procyclidine, Serum/Plasma