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) (13) (-) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (3) Sample Type (-) Blood (1) (-) RBCs (1) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (3) Test Category Metals/Elements (3) Test Sub-Category Toxic Elements (3) Test Test Name 4124B Rubidium, Blood 4124R Rubidium, RBCs 4124U Rubidium, Urine