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 (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (8) Sample Type (-) Blood (1) Serum or Plasma (2) Urine (1) Test Area Therapeutics (1) Test Category Alcohols (1) (-) Analgesics (1) Anesthetics (3) Antidepressants (2) Antiepileptics/Antiseizures (3) Hallucinogens (2) Herbicides (1) Pesticides/Insecticides (2) Sedative/Hypnotics (1) Solvents (3) Volatiles (7) Test Sub-Category Opiates/Opioids (1) Test Test Name 2610B Meperidine and Metabolite, Blood