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 (1) (-) Serum or Plasma (1) Urine (1) Test Area Therapeutics (1) Test Category (-) Analgesics (1) Antiarrhythmics (1) Anticholinergics (1) Antiepileptics/Antiseizures (1) Antineoplastics (1) Herbicides (1) Muscle Relaxants (1) Pesticides/Insecticides (1) Vasodilators (1) Volatiles (3) Test Sub-Category Opiates/Opioids (1) (-) Other (1) Test Test Name 3525SP Phenazopyridine, Serum/Plasma