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) (2) Sample Type Blood (1) (-) RBCs (1) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (2) Test Category Metals/Elements (2) Test Sub-Category (-) Macrominerals (2) Other (9) Toxic Elements (1) Trace Elements (4) Test Test Name 2551R Magnesium - Total, RBCs 2551U Magnesium - Total, Urine