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) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type Blood (2) RBCs (1) Serum or Plasma (3) (-) Urine (2) Test Area Exposure (1) Therapeutics (1) Test Category Antacids (1) Metals/Elements (1) Test Sub-Category (-) Antihistamines (1) Other (3) (-) Toxic Elements (1) Test Test Name 4085U Ranitidine, Urine 4124U Rubidium, Urine