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 (14) Fluid (1) Hair (7) Nails (5) RBCs (5) Serum or Plasma (14) (-) Stool (1) Urine (13) Test Area Test Category Test Sub-Category Test Test Name 2551ST Magnesium - Total, Stool