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) (1) Sample Type 24 Hour Urine (1) Blood (53) Fluid (2) Hair (7) Meconium (2) Nails (4) RBCs (5) Serum or Plasma (59) Stool (1) (-) Tissue (1) Urine (45) Test Area Test Category Test Sub-Category Test Test Name 8722TI Methadone and Metabolite, Tissue