Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme Immunoassay (EIA) (1) (-) Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (7) Sample Type Blood (3) Serum or Plasma (2) (-) Urine (2) Test Area Exposure (1) (-) Therapeutics (2) Test Category Antispasmodics (1) Muscle Relaxants (1) Test Sub-Category Antispasmodics (1) Other (1) Test Test Name 3248U Orphenadrine, Urine 3266U Oxybutynin, Urine