Signs and symptoms of peripheral neuropathy might include: 1  Gradual onset of numbness, prickling or tingling in your feet or hands, which can spread upward into your legs and arms. 2  Sharp, jabbing, throbbing, freezing or burning pain.  Extreme sensitivity to touch.
Clinical Significance. Magnesium measurements are used in the diagnosis and treatment of hypomagnesemia (abnormally low plasma levels of magnesium) and hypermagnesemia (abnormally high plasma levels of magnesium). Magnesium is decreased in chronic nephritis, acute pancreatitis, and alcoholic cirrhosis.
You may also take them if you have low potassium and calcium levels in your blood. If your doctor suspects that your magnesium level is too low or too high, they may order a serum magnesium test. This test involves a basic blood draw. Your doctor will collect some of your blood into a vial or tube and send it to a lab for testing.