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 (4) (-) Serum or Plasma (4) Urine (4) Test Area (-) Therapeutics (4) Test Category Analgesics (4) Antianxiety (1) Antidepressants (2) Antidiabetics (1) Antihypertensives (2) (-) Opiate/Opioid Antagonists (2) Other (1) (-) Sedative/Hypnotics (2) Test Sub-Category Benzodiazepines (2) Other (2) Test Test Name 3111SP Naloxone - Free (Unconjugated), Serum/Plasma 3116SP Naltrexone and Metabolite - Free (Unconjugated), Serum/Plasma 3175SP Nitrazepam and Metabolite, Serum/Plasma 9215SP Nitrazepam and Metabolite Screen, Serum/Plasma