Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type Blood (3) Fluid (1) Hair (1) Nails (1) RBCs (1) Serum or Plasma (3) Tissue (1) (-) Urine (4) Test Area Exposure (1) Therapeutics (3) Test Category Analgesics (3) Antianxiety (1) Antidepressants (4) Antihypertensives (1) (-) Metals/Elements (1) NPS/Designer Drugs (3) (-) Opiate/Opioid Antagonists (3) Sedative/Hypnotics (1) Solvents (3) Stimulants (2) Test Sub-Category Other (4) Test Test Name 3111U Naloxone - Total (Conjugated/Unconjugated), Urine 3113U Naloxone - Total (Conjugated/Unconjugated) Screen, Urine 3116U Naltrexone and Metabolite - Total (Conjugated/Unconjugated), Urine 3140U Nickel, Urine