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 Therapeutics (2) Test Category Antispasmodics (2) Test Sub-Category (-) Antispasmodics (2) Benzodiazepines (2) NSAIDs (2) Opiates/Opioids (18) Other (10) Proton-Pump Inhibitors (2) Test Test Name 3266B Oxybutynin, Blood 3266SP Oxybutynin, Serum/Plasma