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 (5) Antianxiety (2) Antiarrhythmics (1) Antidepressants (3) Antiepileptics/Antiseizures (1) Antihistamines (1) Antihypertensives (2) Antipsychotics (1) Antispasmodics (1) Appetite Suppressants (1) Decongestants (1) Diagnostic Aids (1) Immunosuppressants (1) NPS/Designer Drugs (3) (-) Opiate/Opioid Antagonists (3) Other (1) Plasticizers (1) Sedative/Hypnotics (2) Solvents (1) Stimulants (2) 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