Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (1) Sample Type Blood (2) (-) Serum or Plasma (1) Urine (2) Test Area (-) Therapeutics (1) Test Category (-) Analgesics (1) Antiarrhythmics (3) Anticholinergics (1) Antidepressants (1) Antidiabetics (2) Antiepileptics/Antiseizures (7) Antihistamines (2) Antineoplastics (1) Antipsychotics (4) Appetite Suppressants (1) Immunosuppressants (1) Muscle Relaxants (1) Opiate/Opioid Antagonists (2) Other (1) Stimulants (1) Vasodilators (1) Test Sub-Category NSAIDs (5) Opiates/Opioids (7) (-) Other (1) Test Test Name 3525SP Phenazopyridine, Serum/Plasma