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) (-) Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (3) Fat (1) Serum or Plasma (3) Tissue (1) (-) Urine (3) Test Area Exposure (2) Therapeutics (1) Test Category Muscle Relaxants (1) Other (2) Test Sub-Category Antispasmodics (1) (-) Other (3) Test Test Name 1352U o-Cresol, Urine 3248U Orphenadrine, Urine 3250U Oxalate, Urine