Cardio IQ® Vitamin D, 25-Hydroxy Blood Test
The Cardio IQ® Vitamin D, 25-Hydroxy Blood Test is used to help screen for and diagnose vitamin D deficiency or toxicity and monitor response to vitamin D2 or vitamin D3 supplementation.
Order this Cardio IQ® Vitamin D, 25-Hydroxy Blood Test to help diagnose a deficiency or toxicity and monitor response to vitamin D2 or vitamin D3 supplementation. Vitamin D is essential for managing overall health in adults and developing children. A deficiency of vitamin D can cause children to develop a bone-malformation condition known as rickets, and adults can develop osteomalacia, characterized by:
- Pain in the bones and hips
- Fractures of the bones
- Difficulty walking
Adequate vitamin D levels are required for the body to regulate the blood's calcium, phosphorus, and magnesium levels. In fact, recent studies have shown that vitamin D levels influence the growth of other tissues in the body and the regulation of the immune system. In addition, researchers think vitamin D deficiency is linked to the development of conditions such as cancer, heart disease‚ osteoporosis, and multiple sclerosis.
Those at a higher risk of vitamin D deficiency include individuals who:
- Are older than 65
- Are obese or overweight
- Have dark skin
- Have limited sun exposure
- Recently underwent weight loss surgery
- Have a condition such as kidney or liver disease, cystic fibrosis, or Crohn's disease
The body gets vitamin D in two forms: vitamin D2 & D3. Vitamin D2 (ergocalciferol) is produced in mushrooms, vitamin-enriched foods, and dietary supplements. However, when exposed to direct sunlight, vitamin D3 (cholecalciferol) is generated in the skin. Vitamin D3 may also be obtained from certain animal-based products, vitamin-enriched foods, and dietary supplements. Both forms of vitamin D are absorbed into the bloodstream and undergo a chemical change in the liver and the kidneys to become 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D.
It is important to note that too much vitamin D, also referred to as vitamin D toxicity, can be as harmful as a deficiency. Vitamin D toxicity is caused by over usage of vitamin D supplements or overexposure to sunlight. Excessive amounts of vitamin D cause damage to the kidneys and lead to elevated calcium levels in the bloodstream. This condition is known as hypercalcemia and is characterized by:
- Heart rhythm problems
- Loss of appetite
- Sudden weight loss
The Cardio IQ® Vitamin D, 25-Hydroxy Blood Test is usually ordered for individuals experiencing symptoms of either a vitamin D deficiency or toxicity. Individuals may also order this test to monitor their osteoporosis and hypercalcemia treatment.
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