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) (2) Sample Type Fluid (1) Serum or Plasma (1) (-) Urine (2) Test Area Diagnostic Aids (2) Test Category Biomarkers (1) Electrolytes (1) Test Sub-Category Alkaloids (1) Benzodiazepines (1) Beta Blockers (1) Designer Benzodiazepines (1) Opiates/Opioids (3) Other (6) (-) Small Molecule (2) Sympathomimetic Amines (1) Synthetic Cathinone (1) Toxic Elements (1) Test Test Name 0642U Betahydroxybutyric Acid, Urine 0645U Bicarbonate, Urine