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 (4) Blood (120) Fluid (28) Hair (8) Liquid (4) Nails (6) Plasma (1) RBCs (7) Serum or Plasma (122) (-) Stool (1) Tissue (21) Urine (79) Test Area (-) Exposure (1) Test Category Metals/Elements (1) Test Sub-Category Macrominerals (1) Test Test Name 2551ST Magnesium - Total, Stool