Whole blood metals are the standard for diagnosis of lead, mercury or other metal toxicity or poisoning, and are also used to assess recent or ongoing exposure to potentially toxic elements. Serum elements are used to assess the status of key elements and electrolytes that have important functions in the extracellular fluid compartment of blood. Analytes Tested: Arsenic Barium Cadmium Calcium (total), serum Calcium; whole blood Chromium Cobalt Copper Iron Lead Lithium Magnesium, serum Magnesium; whole blood Manganese Mercury Molybdenum Nickel Phosphorus (Inorganic) Platinum Potassium Selenium Sodium; serum Strontium Thallium Tungsten Uranium Vanadium Zinc