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) (1) Sample Type Blood (3) Fluid (2) Serum or Plasma (3) Tissue (1) (-) Urine (2) Test Area Therapeutics (2) Test Category (-) Analgesics (2) Depressants (1) Test Sub-Category NSAIDs (2) (-) Opiates/Opioids (2) Test Test Name 2079U Fentanyl and Metabolite, Urine 2610U Meperidine and Metabolite, Urine