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Ionized calcium is the form of calcium that is free or unbound to serum protein (mainly albumin). Measurement of ionized calcium provides insight if you have signs of kidney disease, parathyroid disease, and certain conditions that alter your levels of albumin. However, total calcium remains the first line test for evaluation of calcium abnormality.
Calcium is the most abundant mineral in the human body with the bones and teeth housing 99% of all calcium in the body. Best known for its role in maintaining the strength and density of bones, calcium also plays a role in many physiological activities including: blood clotting, nerve conduction, muscle contraction, regulation of enzyme activity, and cell membrane function. Because these activities are essential to life, calcium is the most closely regulated element in our bodies. In fact, calcium is the only mineral that has its own regulatory system (the parathyroid glands). Parathyroid glands control how much calcium is in our bones, and how much calcium is in our blood.
A 6 hour fast is required for this blood test. However, drink plenty of water and take your medications as prescribed.
The laboratory services are for informational purposes only. It is not the intention of National Diagnostics, Inc and Life Extension to provide specific medical advice but rather to provide users with information to better understand their health. Specific medical advice including diagnosis and treatment will not be provided. Always seek the advice of a trained health professional for medical advice, diagnosis or treatment.
Both the physician and the testing laboratory are independent contractors with whom National Diagnostics, Inc makes arrangements for your blood tests. Neither National Diagnostics, Inc or Life Extension will be liable for any acts or omissions of the physician, the testing laboratory, or their agents or employees.