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) (1) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (9) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (5) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (1) Sample Type Blood (4) (-) Fluid (1) Plasma (1) Serum or Plasma (5) Urine (9) Test Area Diagnostic Aids (1) Test Category Biomarkers (1) Test Sub-Category Small Molecule (1) Test Test Name 0420FL Betahydroxybutyric Acid, Fluid