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) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (1) Sample Type Blood (1) (-) Fluid (1) Hair (1) RBCs (1) Serum or Plasma (1) Stool (1) (-) Urine (1) Test Area Exposure (2) Test Category Metals/Elements (2) Test Sub-Category Alkaloids (1) Barbiturates (1) Benzodiazepines (2) Beta Blockers (2) CNS Stimulants (2) Dopamine Antagonists (1) Hormones (1) (-) Macrominerals (2) Opiates/Opioids (10) Other (36) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (1) Tetracyclics (2) Toxic Elements (2) Trace Elements (4) Test Test Name 2551FL Magnesium - Total, Fluid 2551U Magnesium - Total, Urine