Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Colorimetry (C) (1) Enzymatic Assay (EZA) (1) Enzyme Immunoassay (EIA) (1) (-) Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (7) Sample Type Blood (7) Fat (1) Fluid (1) Hair (1) Serum or Plasma (5) Tissue (2) (-) Urine (3) Test Area Exposure (1) Therapeutics (2) Test Category Antispasmodics (1) Muscle Relaxants (1) Other (1) Test Sub-Category Antispasmodics (1) Other (2) Test Test Name 1352U o-Cresol, Urine 3248U Orphenadrine, Urine 3266U Oxybutynin, Urine