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 (-) Serum or Plasma (1) Test Area Exposure (1) Test Category Alcohols (3) Analgesics (27) Anesthetics (1) Antacids (4) Antianxiety (4) Antiarrhythmics (7) Anticholinergics (2) Antidepressants (12) Antidiabetics (4) Antiepileptics/Antiseizures (21) Antihistamines (5) Antihypertensives (10) Antimicrobials (5) Antineoplastics (2) Antipsychotics (10) Antispasmodics (2) Appetite Suppressants (2) Chemicals (1) Decongestants (3) Hallucinogens (2) Herbicides (3) Immunosuppressants (2) Industrial/Environmental Toxins (2) Metals/Elements (14) Muscle Relaxants (2) NPS/Designer Drugs (7) Opiate/Opioid Antagonists (4) Other (2) Perfluorinated Compounds (4) Pesticides/Insecticides (5) Sedative/Hypnotics (6) Stimulants (6) Terpenes (1) (-) Therapeutics (1) Vasodilators (4) Volatiles (9) Test Sub-Category Other (1) Test Test Name 3174SP Nitrate/Nitrite (Qualitative), Serum/Plasma