Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (4) Sample Type Blood (6) Serum or Plasma (5) Tissue (1) (-) Urine (4) Test Area Drugs of Abuse (3) Exposure (4) (-) Therapeutics (4) Test Category Antidepressants (1) Opiate/Opioid Antagonists (3) Test Sub-Category Benzodiazepines (2) Beta Blockers (1) NSAIDs (2) Opiates/Opioids (1) (-) Other (4) Tricyclic (3) Test Test Name 3111U Naloxone - Total (Conjugated/Unconjugated), Urine 3113U Naloxone - Total (Conjugated/Unconjugated) Screen, Urine 3116U Naltrexone and Metabolite - Total (Conjugated/Unconjugated), Urine 3145U Nefazodone, Urine