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/Mass Spectrometry (ICP/MS) (1) Sample Type (-) Blood (1) Hair (1) RBCs (1) Serum or Plasma (1) Stool (1) Urine (1) Test Area Test Category Test Sub-Category Test Test Name 2551B Magnesium - Total, Blood