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 (6) Fluid (3) Hair (1) Nails (1) (-) RBCs (2) Serum or Plasma (5) Stool (1) Tissue (1) Urine (3) Test Area Exposure (2) Test Category Metals/Elements (2) Test Sub-Category (-) Macrominerals (1) Other (1) (-) Toxic Elements (1) Trace Elements (1) Test Test Name 3140R Nickel, RBCs 3784R Potassium - Total, RBCs