Calcium is one of the most important minerals in your body.
Almost all calcium in the body is stored in bones and teeth, where it supports their structure and hardness. It is also important for muscle, nerve, and blood vessel function, and the release of hormones and enzymes.
Calcium deficiency is usually asymptomatic in the short term, because the body pulls calcium from bone to maintain levels required for other functions. However, if calcium deficiency is not corrected, bones eventually become weaker, increasing the risk of osteoporosis and bone fractures.
Why consider this test?
- Prevent longterm effects of calcium deficiency, including weakened bones
- Age increases the risk of calcium deficiency
- Hormonal changes and medications can affect how much calcium you absorb from your diet
- Low levels of other important vitamins and minerals (e.g. vitamin D and magnesium) can contribute to calcium deficiency
- Many people don’t obtain enough calcium from their diet, including teenagers, postmenopausal women, and elderly men
Symptoms of calcium deficiency
Fatigue
Muscle cramps
Confusion
Weak bones
Depression
Insomnia
What’s included in the Calcium Deficiency Test?

Calcium
Calcium is a mineral found in many foods. It is important for strong bones and teeth, muscle movement, nerve function, and hormone and enzyme release. The best sources of calcium are dairy products, as well as leafy green vegetables, almonds, sardines, and tofu. Adequate vitamin D is also required for proper calcium absorption from foods.
Calcium requirements differ by age. Higher amounts are required around puberty and during adolescence (as calcium is deposited into the bones), and again in older people (as stored calcium can become depleted).
How It Works
Step 1. Order your test.
Choose the test that matches your need from our large array of tests. The kit will be delivered to your doorstep. There is no need to leave the comfort of your home.
Step 2. Collect your sample.
Collect your sample using the included instructions. Return your sample using the prepaid, pre-addressed packaging provided.
Step 3. Access your results online
Your sample will be tested as soon as it arrives at our lab. Access your results securely online via TherizonConnect.

Use TherizonConnect to view your test results quickly and easily
The results are only available through TherizonConnect, a free, secure patient portal that you can access on your smartphone, tablet, or desktop. You can also share your results with your doctor, family, or friends.
Calcium FAQs
Here are the answers to the most frequently asked questions about this test. Please feel free to contact us if you have any other questions.
How much calcium is required per day?
Daily calcium requirements depend on age and gender. At birth, infants require 200 mg calcium per day, with gradually increasing levels until reaching 1000 mg per day at four years of age. Children and teenagers from 9-18 years need increased levels (1300 mg per day). All adults from 19-50 years and adult males from 51-70 years need 1000 mg per day, while postmenopausal women and men over 70 years require 100 mg per day.
What are normal serum calcium levels?
Normal calcium levels for adults can range from 8.4 to 10.4 mg/dL.
Do pregnant and breastfeeding women require additional calcium?
The requirements for pregnancy and breastfeeding are not increased above the normal requirements for non-pregnant and non-breastfeeding females of the same age.
Are there medical professionals involved in the process?
All of our tests are developed with advice and input from medical professionals.
How does the Calcium Deficiency Test work?
Self-collect your sample following the detailed instructions included in the kit. Place your sample in the specimen bag provided and mail it back to the lab using the prepaid envelope inside the kit.
Our lab uses a verified and approved chemiluminescent microparticle immunoassays (CMIA) to accurately measure serum calcium levels in the sample provided. Your results are available through our online portal as soon as testing is complete.
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