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) Serum or Plasma (1) Test Area Exposure (1) Therapeutics (1) Test Category Alcohols (1) Analgesics (2) Anesthetics (1) Antiarrhythmics (2) Anticholinergics (1) Antidepressants (1) Antidiabetics (2) Antiepileptics/Antiseizures (6) Antihistamines (3) Antineoplastics (1) Antipsychotics (4) Appetite Suppressants (1) Hallucinogens (1) Herbicides (1) Immunosuppressants (1) (-) Industrial/Environmental Toxins (1) Metals/Elements (1) Muscle Relaxants (1) NPS/Designer Drugs (1) Opiate/Opioid Antagonists (2) Perfluorinated Compounds (1) Pesticides/Insecticides (1) Sedative/Hypnotics (1) Stimulants (2) Terpenes (1) Vasodilators (2) Volatiles (5) Test Sub-Category (-) Other (1) Test Test Name 3174B Nitrate/Nitrite (Qualitative), Blood (Forensic)