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 Blood (2) (-) Fluid (1) Hair (1) RBCs (1) Serum or Plasma (2) Stool (1) Urine (1) Test Area Exposure (1) Test Category Metals/Elements (1) Test Sub-Category Benzodiazepines (1) Beta Blockers (1) (-) Macrominerals (1) Opiates/Opioids (2) Other (5) Toxic Elements (1) Trace Elements (1) Test Test Name 2551FL Magnesium - Total, Fluid