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 Analgesics (20) Antacids (2) Antianxiety (2) Antiepileptics/Antiseizures (2) Antipsychotics (2) (-) Antispasmodics (2) Muscle Relaxants (3) Other (1) Pesticides/Insecticides (2) Test Sub-Category Antispasmodics (2) Test Test Name 3266B Oxybutynin, Blood 3266SP Oxybutynin, Serum/Plasma