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 (42) Fluid (7) Hair (5) Nails (3) RBCs (3) Serum or Plasma (40) (-) Stool (1) Tissue (1) Urine (33) Test Area Exposure (1) Test Category Metals/Elements (1) Test Sub-Category (-) Macrominerals (1) Test Test Name 2551ST Magnesium - Total, Stool