Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type (-) Blood (1) Fluid (2) (-) RBCs (1) Serum or Plasma (2) Urine (4) Test Area (-) Diagnostic Aids (2) Drugs of Abuse (17) Exposure (25) Impairment (1) Postmortem (1) Therapeutics (41) Test Category Biomarkers (1) Metals/Elements (1) Test Sub-Category Macrominerals (1) Small Molecule (1) Test Test Name 0420B Betahydroxybutyric Acid, Blood 0938R Calcium - Total, RBCs