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) (4) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (2) Sample Type Blood (1) Fluid (1) Test Area Diagnostic Aids (2) Test Category Biomarkers (2) Test Sub-Category Alkaloids (3) Alkylating Agents (1) Anticoagulants (3) Barbiturates (12) Benzodiazepines (7) Beta Blockers (3) Designer Benzodiazepines (3) Opiates/Opioids (11) Other (35) (-) Small Molecule (2) Sympathomimetic Amines (3) Synthetic Cathinone (3) Test Test Name 0420B Betahydroxybutyric Acid, Blood 0420FL Betahydroxybutyric Acid, Fluid