Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (2) Serum or Plasma (2) (-) Urine (2) Test Area (-) Therapeutics (2) Test Category (-) Analgesics (2) Antacids (1) Antianxiety (1) Antidepressants (5) Antiepileptics/Antiseizures (3) Antigout Agents (1) Antihistamines (3) Antihypertensives (1) Antimicrobials (1) Antipsychotics (5) Muscle Relaxants (3) Sedative/Hypnotics (6) Stimulants (1) Test Sub-Category Opiates/Opioids (2) Test Test Name 1306U Codeine - Total (Conjugated/Unconjugated) Screen, Urine 8661U Codeine and Metabolite - Total (Conjugated/Unconjugated), Urine