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Symptoms And Health Risks Of Vitamin D Deficiency
Symptoms of bone pain and muscle weakness can mean you have a vitamin D deficiency. Low blood levels of the vitamin have been associated with the following: Increased risk of death from cardiovascular disease
Cognitive impairment in older adults
Severe asthma in children
Cancer Research suggests that vitamin D could play a role in the prevention and treatment of a number of different conditions, including type1 and type 2 diabetes, hypertension, glucose intolerance, and multiple sclerosi.
Reference Range
Rincipal forms of vitamin D: D2 and D3.
Many of the currently available assays measure and report on both vitamin D2 and D3 metabolites. 25-hydroxyvitamin D (25(OH)D) is the major circulating form of vitamin D; thus, the total serum 25(OH)D level is currently considered the best indicator of vitamin D supply to the body from cutaneous synthesis and nutritional intake.
How The Test Is Performed
Others recommend a level between 30 and 50 ng/mL.
The examples above are common measurements for results of these tests. Normal value ranges may vary slightly among different laboratories.
What Is A 25-Hydroxy Vitamin D Test?
Vitamin D is a nutrient that the body makes on exposure to sunlight.
It is also present in some foods, such as oily fish and egg yolk. Vitamin D performs several important roles throughout the body. For example, it helps the body absorb calcium to maintain bone health.
Doctors use blood samples to carry out the test.