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) Sample Type Blood (1) Test Area Drugs of Abuse (8) Exposure (10) (-) Therapeutics (1) Test Category Analgesics (11) Anesthetics (2) Antianxiety (3) Antidepressants (11) Antidiabetics (2) Antihypertensives (5) (-) Industrial/Environmental Toxins (1) Opiate/Opioid Antagonists (7) Other (1) Sedative/Hypnotics (5) Vasodilators (1) Test Sub-Category Other (1) Test Test Name 3174B Nitrate/Nitrite (Qualitative), Blood (Forensic)