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normal levels: between 50 nmol/L (20 ng/mL) and 125 nmol/L (50 ng/mL) high levels: higher than 125 nmol/L (50 ng/mL) If your vitamin D levels are low and you’re having...
For adults, a level of vitamin D in the blood of 20 nanograms per milliliter (ng/mL) or above is generally considered adequate. Levels below 20 ng/mL are generally too low for adequate bone...
The normal range of 25-hydroxy vitamin D is measured as nanograms per milliliter (ng/mL) or nanomoles/liter (nmol/L). Many experts recommend a level from 20 and 40 ng/mL or 60 and 100 nmol/L. Others recommend a level from 30 to 50 ng/mL (75 to 125 nmol/L).
Normal Results. The normal range of 25-hydroxy vitamin D is measured as nanograms per milliliter (ng/mL) or nanomoles/liter (nmol/L). Many experts recommend a level from 20 and 40 ng/mL or 60 and 100 nmol/L. Others recommend a level from 30 to 50 ng/mL (75 to 125 nmol/L).
Based on animal studies and large human epidemiological studies, 25-hydroxyvitamin D2 and D3 (25-OH-VitD) levels below 25 ng/mL are associated with an increased risk of secondary hyperparathyroidism, reduced bone mineral density, and fractures, particularly in the elderly.
The normal range of 25-hydroxy vitamin D is measured as nanograms per milliliter (ng/mL). Many experts recommend a level between 20 and 40 ng/mL. Others recommend a level between 30 and 50 ng/mL.
Optimal levels. Vitamin D levels of 30 to 100 ng/mL are considered optimal. Low levels—suboptimal. Vitamin D levels between 20 and 29 ng/mL are considered suboptimal. Vitamin D insufficiency may lead to elevated parathyroid hormone (PTH) levels (secondary hyperparathyroidism). Low levels—deficiency.
In the International System of Units (SI), vitamin D [25 (OH)D] in the blood is measured in nmol/L. The normal vitamin D level in the blood in the SI is: Adults: 75 - 125 nmol/L. Children: 75 - 125 nmol/L.
The major circulating form of vitamin D is 25-hydroxyvitamin D (25(OH)D); thus, the total serum 25(OH)D level is currently considered the best indicator of vitamin D supply to the body from...
The Endocrine Society, the National and International Osteoporosis Foundation, and the American Geriatric Society define vitamin D deficiency as the level of 25-hydroxyvitamin (25 OH D) of less than 30 ng/mL. The Endocrine Society recommends a preferred range of 40 to 60 ng/mL.