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 (5) (-) Urine (2) Test Area Test Category Test Sub-Category Test Test Name 4085U Ranitidine, Urine 4105U Risperidone and Metabolite, Urine