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/Optical Emission Spectrometry (ICP/OES) (1) Sample Type 24 Hour Urine (1) Blood (6) Fluid (3) Hair (3) Liquid (2) Nails (2) RBCs (4) Serum or Plasma (7) (-) Stool (1) Tissue (2) Urine (5) Test Area Exposure (1) Test Category Metals/Elements (1) Test Sub-Category (-) Macrominerals (1) Test Test Name 2551ST Magnesium - Total, Stool