Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Enzymatic Assay (EZA) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Fluid (1) Serum or Plasma (1) (-) Urine (2) Test Area Diagnostic Aids (2) Test Category Biomarkers (1) Electrolytes (1) Test Sub-Category (-) Small Molecule (2) Test Test Name 0642U Betahydroxybutyric Acid, Urine 0645U Bicarbonate, Urine