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) (8) (-) Enzymatic Assay (EZA) (2) Enzyme-Linked Immunosorbent Assay (ELISA) (1) Enzyme Immunoassay (EIA) (5) Gas Chromatography (GC) (11) Gas Chromatography/Mass Spectrometry (GC/MS) (9) Headspace Gas Chromatography (GC) (9) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (36) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (4) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (14) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (1) Refractometer (REF) (2) 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