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) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (2) Serum or Plasma (1) (-) Urine (2) Test Area (-) Therapeutics (2) Test Category (-) Analgesics (2) Anticholinergics (1) Antiepileptics/Antiseizures (1) Antihistamines (1) Antipsychotics (1) Appetite Suppressants (1) Cholinesterase Inhibitors (1) Diagnostic Aids (1) Test Sub-Category NSAIDs (1) Opiates/Opioids (3) (-) Other (2) Test Test Name 3510U Phenacetin and Metabolite, Urine 3525U Phenazopyridine, Urine