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 Alcohols (1) Analgesics (2) Anticholinergics (1) Antidepressants (1) Antiepileptics/Antiseizures (1) Antihistamines (1) Antipsychotics (1) Appetite Suppressants (1) Hallucinogens (1) Immunosuppressants (1) Metals/Elements (1) Muscle Relaxants (1) (-) Opiate/Opioid Antagonists (3) Other (1) Plasticizers (1) Solvents (5) Stimulants (1) Volatiles (3) 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