The 25(OH)D blood test determines the level of Vitamin D in the body. It helps you ascertain how much Vitamin D you’re getting, sufficient, less than sufficient or more than sufficient. Given the recent researches that have emerged, it is imperative that we keep our Vitamin D levels in check.
Vitamin D levels are measured in two units ng/ml and nmol/l. If you multiply your ng/ml result with 2.5, you will get the nmol/l unit reading of your Vitamin D level.
0-10 ng/ml (0-25 nmol/l)
If that’s what your results show, you’re deficient in Vitamin D to the point that it may hamper your daily energy level and metabolism according to the standards set by the Institute of Medicine, the Endocrine Society and the Vitamin D Council.
Since, Vitamin D aids in the absorption of Calcium in your body, your Calcium levels too are at risk leading to soft bones, frequent fractures and low energy. You may even experience achy muscles and joints.
10-20 ng/ml (25-50 nmol/l)
According to the standards set by the Vitamin D council and the endocrine society, this too falls under the category of Vitamin D deficiency. Those with brown or dark brown skin complexions usually fall under this category.
This level makes you under the danger of developing osteoporosis due to lack of calcium absorption, increase in the likelihood of getting fractured bonds. Alternately, this range may indicate an excess of the parathyroid hormone in the body which maintains phosphorous and calcium levels in the body ultimately affecting the bones.
20-30 ng/ml (50-75 nmol/l)
Vitamin D Council considers this range to still be a deficiency of Vitamin D while the Endocrine Society considers it an insufficiency whereas the Institute of Medicine suggests this be the optimum Vitamin D level. Usually, people have Vitamin D levels under this range.
People with Vitamin D within this range are less likely to suffer health or metabolic problems compared to those who fall in the prior ranges. You still ought to check your parathyroid hormone levels to ensure that your body absorbs calcum properly. Research indicates those with a level higher than 30 ng/ml or 75 nmol/l are less likely to have fractures.
30-40 ng/ml (75-100 nmol/l)
This level is generally considered as sufficient but Vitamin D council still thinks this is deficiency; however, these levels are way better than most others. The Institute of Medicine and the Endocrine Society consider to be just the right level- enough Vitamin D.
This means your body absorbs enough calcium and has the optimum level of parathyroid hormone – great bones. Some researches claim that these levels of Vitamin D reduce Cancer risk and boost immune system warding off various infections.
40-50 ng/ml (100-125 nmol/l)
According to almost all standards, this is the sufficient Vitamin D level. These are the levels that mankind has believed to have evolved with; however, staying indoors and avoiding sun, using sunscreen and staying covered at all times coupled with an unhealthy lifestyle led to an overall decrease in our Vitamin D levels.
Vitamin D does its best work at this regulating the release of the parathyroid hormone and helping calcium absorption in the body. Lactating mothers have enough Vitamin D in their breast milk to pass on to their child.
Research studies indicate at this level bones are healthier, fractures are rare, heart disease and blood circulation is also well regulated not to mention, it boosts immune system and is supposed to keep Cancer at bay.
50-60 ng/ml (100-150 nmol/l)
The Endocrine Society and the Vitamin D Council suggest that this is the right amount of Vitamin D while the Institute of Medicine insists that there is no sufficient evidence to have a Vitamin D level higher than 50 ng/ml (100 nmol/l). More research needs to be done to be ensure whether this level is healthy or not.
60-80 ng/ml (150-200 nmol/l)
The Endocrine Society and the Vitamin D Council consider this to be the right level. However, the Institute of Medicine insists that there is a lack of evidence suggesting their claim. The Vitamin D council considers this as the high normal range. Research studies have indicated that regularly exposing your skin to the sun can lead to these levels so they are believed to be natural and healthy levels.
Lack of evidence suggests this might not be of much benefit nor does it indicate any danger to have a Vitamin D level this high. More research on this range is awaited.
80-100 ng/ml (200-250 nmol/l)
The Endocrine Society still considers this to be the normal level while the Institute of Medicine believes it might not be of much benefit due to lack of evidence suggesting the same.
However, these levels are not natural. One needs a supplement to achieve this level. Research is awaited on the benefits and dangers of having Vitamin D levels this high.
100-150 ng/ml (250-375 nmol/l)
These levels are considered very high and lack evidence to be of any benefit to the human body. Moreover, they cannot be obtained merely through regular exposure to sunlight, supplementation is necessary to achieve this level. A study by a group of researchers in Utah found that levels over 100 ng/ml are linked to a slight increased risk of developing an irregular heart beat called atrial fibrillation.
Doctors usually recommend keeping Vitamin D levels lower than this range.
More than 150 ng/ml (375 nmol/l)
By all standards, these are supposed to be toxic Vitamin D levels that pose a severe danger to your health.
Whatever your Vitamin D levels are, it is best to consult your doctor to understand whether you require additional supplementation or not.
Disclaimer: The article shared here is for information purposes. Kindly do not self medicate. Consult your doctor prior to taking Vitamin D supplements.