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) (1) Sample Type Serum or Plasma (1) (-) Urine (2) Test Area Exposure (2) Test Category (-) Other (2) Test Sub-Category Other (2) Test Test Name 1352U o-Cresol, Urine 3250U Oxalate, Urine