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) Gas Chromatography (GC) (1) Sample Type Serum or Plasma (1) (-) Urine (1) Test Area Exposure (1) Test Category Analgesics (7) Antianxiety (1) Antispasmodics (1) Industrial/Environmental Toxins (1) Muscle Relaxants (1) (-) Other (1) Test Sub-Category Other (1) Test Test Name 1352U o-Cresol, Urine