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 (11) Fluid (3) Hair (1) Meconium (1) Oral Fluid (Saliva) (1) (-) RBCs (1) Serum or Plasma (11) Stool (1) Tissue (1) Urine (9) Test Area Exposure (1) Test Category Metals/Elements (1) Test Sub-Category (-) Macrominerals (1) Other (2) Toxic Elements (1) Trace Elements (2) Test Test Name 2551R Magnesium - Total, RBCs