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 (5) Serum or Plasma (5) (-) Urine (4) Test Area Therapeutics (4) 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 Beta Blockers (1) Other (3) Test Test Name 3103U Nadolol, Urine 3111U Naloxone - Total (Conjugated/Unconjugated), Urine 3113U Naloxone - Total (Conjugated/Unconjugated) Screen, Urine 3116U Naltrexone and Metabolite - Total (Conjugated/Unconjugated), Urine