- Serum Calcium
Calcium is a mineral that is very important in bone health and normal muscle function. Calcium levels are used to monitor over-active parathyroid glands, kidney failure, vitamin D toxicity, and certain cancers. Blood levels are also closely monitored during and after large numbers of blood transfusions, and following kidney transplant. Drinking large amounts of milk can increase calcium levels, and there are many medications that can affect blood levels. Abnormal blood levels of calcium are seen in people with Addison's disease, an over-active thyroid gland, lymphoma, osteomalacia, vitamin D deficiency, rickets, or pancreatitis.
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