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) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Sample Type Blood (1) (-) Fluid (2) Serum or Plasma (1) Urine (2) Test Area (-) Diagnostic Aids (2) Drugs of Abuse (1) Therapeutics (6) Test Category Biomarkers (1) Electrolytes (1) Test Sub-Category Small Molecule (2) Test Test Name 0420FL Betahydroxybutyric Acid, Fluid 0645FL Bicarbonate, Fluid