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) Sample Type Blood (1) Serum or Plasma (2) (-) Urine (3) Test Area Exposure (2) Therapeutics (1) Test Category Analgesics (6) Antianxiety (1) (-) Antispasmodics (1) Industrial/Environmental Toxins (1) Muscle Relaxants (1) (-) Other (2) Test Sub-Category Antispasmodics (1) Other (2) Test Test Name 1352U o-Cresol, Urine 3250U Oxalate, Urine 3266U Oxybutynin, Urine