Calcium Test - part of the Comprehensive Metabolic Panel

The calcium blood test measures the level of calcium in the blood.

The calcium found in the blood is of two types. About half of the calcium in the blood is attached to proteins in your blood, mainly albumin. The other half is not attached to proteins. Such calcium is called free or ionized calcium.

Calcium can also be measured in the urine.

This test is part of Cardio-Med's physical exam.

How to Prepare for the Test

The physician may tell you to stop taking certain medicines temporarily that can affect the test. Medicines include:

Drinking too much milk (two or more quarts a day or having an equivalent amount of other dairy products ) or taking too much vitamin D as a dietary supplement can also increase blood calcium levels.

What affects the blood Calcium level?

All cells need calcium in order to work. Calcium helps build strong bones and teeth. It is important for heart function, and helps with muscle contraction, nerve signaling, and blood clotting.

Blood Calcium level can be affected by the following conditions.

Normal Results

Normal values range from 8.5 to 10.2 mg/dL.

What Abnormal Results Mean

Higher-than-normal levels may be due to a number of health conditions. Common causes include:

Lower-than-normal levels may be due to:


Call (847)758-1230 today for an appointment and consultation with our physician.
Serving Chicago, IL and all of the Chicago northwest suburbs, southeastern Wisconsin and northwestern Indiana.


Adapted from the U.S. National Library of Medicine, National Institutes of Health

Complete Physical Exam - Level I includes:

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Resting 12-lead Electrocardiogram (ECG/EKG) recording of electrical activity of the heart      More . . .
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Detailed clinical evaluation and consultation by Physician, not Nurse      More . . .
Comprehensive chemistry profile      More . . .