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) (3) Sample Type Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Therapeutics (1) Test Category Alcohols (1) (-) Analgesics (1) Anesthetics (1) Antidepressants (2) Antiepileptics/Antiseizures (2) Hallucinogens (2) Herbicides (1) Solvents (4) Volatiles (1) Test Sub-Category Opiates/Opioids (1) Test Test Name 2610U Meperidine and Metabolite, Urine