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) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (2) Fluid (2) Plasma (1) Serum or Plasma (1) Urine (2) Test Area Diagnostic Aids (1) Therapeutics (1) Test Category Analgesics (2) (-) Anesthetics (1) Antianxiety (1) Antiarrhythmics (1) Anticholinergics (2) Antidepressants (2) Antiepileptics/Antiseizures (1) Antithrombotics (1) Benzodiazepines (1) (-) Biomarkers (1) Depressants (1) Diuretics (1) Muscle Relaxants (1) NPS/Designer Drugs (2) Sedative/Hypnotics (3) Stimulants (1) Test Sub-Category Other (1) Small Molecule (1) Test Test Name 0420B Betahydroxybutyric Acid, Blood 0800B Bupivacaine, Blood