Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme Immunoassay (EIA) (1) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) Sample Type Blood (4) Fluid (3) Serum or Plasma (4) Tissue (2) (-) Urine (3) Test Area Drugs of Abuse (1) Therapeutics (2) Test Category Acids (2) (-) Analgesics (2) Anticholinergics (1) Antihistamines (1) Antihypertensives (1) Antimicrobials (1) (-) Depressants (1) Test Sub-Category Opiates/Opioids (3) Test Test Name 2276U Heroin Metabolites - Free (Unconjugated), Urine 8663U Hydrocodone and Metabolites - Total (Conjugated/Unconjugated), Urine 8664U Hydromorphone - Total (Conjugated/Unconjugated), Urine