Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (2) Sample Type (-) Blood (1) (-) RBCs (1) Serum or Plasma (1) Urine (1) Test Area Exposure (2) Test Category Metals/Elements (2) Test Sub-Category Antihistamines (1) Cannabinoids (1) Dopamine Antagonists (1) Other (6) (-) Toxic Elements (2) Test Test Name 4124B Rubidium, Blood 4124R Rubidium, RBCs