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 (2) Blood (61) Fluid (11) Hair (8) Liquid (2) Nails (5) Oral Fluid (Saliva) (1) RBCs (6) Serum or Plasma (59) (-) Stool (1) Tissue (5) Urine (45) Test Area (-) Exposure (1) Test Category Metals/Elements (1) Test Sub-Category Macrominerals (1) Test Test Name 2551ST Magnesium - Total, Stool