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) (3) Sample Type Blood (2) Serum or Plasma (2) (-) Urine (3) Test Area (-) Therapeutics (3) Test Category Analgesics (3) Antianxiety (1) Antidepressants (4) Antihypertensives (1) (-) Opiate/Opioid Antagonists (3) Sedative/Hypnotics (1) Test Sub-Category Other (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