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) (1) Enzyme-Linked Immunosorbent Assay (ELISA) (3) Gas Chromatography (GC) (3) Gas Chromatography/Mass Spectrometry (GC/MS) (5) Headspace Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (21) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (4) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (1) Sample Type Fluid (1) (-) Serum or Plasma (1) Urine (2) Test Area Diagnostic Aids (1) Test Category Biomarkers (1) Test Sub-Category Small Molecule (1) Test Test Name 0642SP Betahydroxybutyric Acid, Serum/Plasma