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Know What's a Normal
Vitamin D Level so You’ll
Know More than Your Doctor


Ask your doctor what a Normal Vitamin D Level is and, likely, he won’t even know the right name of the Vitamin D blood test to look up to find the answer. Most likely, he won’t even know why you want the vitamin d blood test in the first place! But because you will have read this, you will have the information you’ll need to educate your self and your doctor on the overwhelming amount of Vitamin D research that shows what a Normal Vitamin D Level and a Low Vitamin D Level is. Most often there are no Symptoms of Vitamin D Deficiency until it is too late and you have a serious chronic illness,that you probably haven't even related to the Low Vitamin D Level in the first place.

 

 

And even though Vitamin D is VERY safe and rarely has any problems with Vitamin D Overdose or toxicity, there is a small chance of taking too much. But unless you are taking VERY large doses of Vitamin D for extremely long periods of time, most people should have their Vitamin D levels checked, not because the level might be too high, but because you probably have Vitamin D Deficiency, in other words, your Vitamin D Blood Test will likely be too low - even if you are otherwise healthy! Either way, having your Vitamin D levels checked and knowing what a normal Vitamin D level is, is extremely important for your health.

 

What is the Vitamin D blood test called?


First of all, the Vitamin D blood test checks Vitamin D serum levels and is called

Vitamin D 25 Hydroxy level
OR
25(OH)D level
OR
25OHD level
OR
25 hydroxyvitamin d Level
 that’s a letter O and not the number 0.


Serum, by the way, is the yellowish component of blood that is left when the blood clots. If you decide that you want to ask for this test, come armed to your doctor’s appointment with this information in the likely event that he doesn’t know the name of the blood test for Vitamin D. If your doctor is not Understanding Blood Test Results and were to order simply ‘Vitamin D level’, ‘Vitamin D serum level’, ‘Vitamin D blood test’ or 'Blood test for Vitamin D' - you could get the wrong test.

 

There is another blood test for Vitamin D, called Vitamin D, 1,25 Dihydroxy level or 1,25(OH)(2)D. Studies show that the Vitamin D, 1,25 Dihydroxy level does not significantly change until the normal Vitamin D level, or 25(OH)D, drops to levels that are considered a VERY severe Vitamin D deficiency.

 

In other words, if your doctor unknowingly orders a Dihydroxy Vitamin D serum level, he could report back to you that you have a normal Vitamin D level when you are actually severely deficient!

 

ALL clinical trials and Vitamin D research that tests Vitamin D serum levels are done using the Vitamin D 25 Hydroxy Test, and your doctor should use that one too.


Vitamin D Spray for Immune Health

 

What is a normal Vitamin D level?


The question that you REALLY want to know is,”what are OPTIMAL Vitamin D levels.” Every laboratory has a ‘reference range’ that is unique and depends upon many different factors. Often they take a range of ‘healthy’ individuals and create an average range after excluding a certain percentage from the low range and the high range. Voila, they determined the normal Vitamin D level. But in the
Symptoms of Vitamin D Deficiency page, you learned that a very high percentage of the population, if not MOST of a seemingly healthy population, has a low Vitamin D level- either from simply not getting enough or from poor Vitamin D Absorption.

The Vitamin D blood test is called 25 (OH) D or Hydroxyvitamin D level



"Vigilance of one’s vitamin D status
by the yearly measurement
of vitamin d 25 hydroxy level should be
part of an annual physical examination."
-Michael F. Holick, 'The Vitamin D Epidemic and its Health Consequences'

 

So, if you take a blood test for Vitamin D and get an average number for a population that is Vitamin D deficient, then you have numbers that are on the low side, right? One study summed this up very well by saying,

“Historically, a 'normal' nutritional vitamin D status has been defined as just about any circulating level of vitamin d 25 hydroxy in asymptomatic subjects.”

You don’t want to have a low or even normal vitamin D blood test. You want to have an OPTIMAL vitamin d 25 hydroxy level.

 

 

So what is an Optimal Vitamin D 25 Hydroxy Level?


Well, there is Vitamin D research that addresses this question specifically, so we’ll use these studies to help you to decide.



The article, ‘Calcium and Vitamin D Diagnostics and Therapeutics’ states,

“It is quite possible that there are two levels of vitamin D sufficiency. One level requires that the serum vitamin d 25 hydroxy levels be at least 20 ng/mL to satisfy the body's requirement for… calcium absorption, bone calcium mobilization and bone mineralization. The second level may need higher circulating levels of vitamin d 25 hydroxy for maximum cellular health...”

These are the Vitamin D levels that they suggest:


Normal Vitamin D Level Recommendations
Minimum Optimal (ng/ml) High End of Optimum (ng/ml) Toxic Level (ng/ml)
Bruce Hollis(ng/ml) 32 >250
Vitamin D Council (ng/ml) 50 80
Vitamin D, A Neglected ‘Analgesic’ for Chronic Musculoskeletal Pain(ng/ml) 30 50 >150
Dr. Mercola
(ng/ml)		 50 65 >100 (excess)
The Use of Vitamin D in Clinical Practice
(ng/ml)		 40 70 > 150

Previously considered 'Normal' vitamin d 25 hydroxy lab values are:

20-56 ng/ml

or

50-140 nmol/L


Their suggestion for the Lowest Optimal vitamin d 25 hydroxy values are:

45-50 ng/ml

or

115-128 nmol/L


Notice that the Normal Vitamin D level is reported in two ways: ng/ml or nmol/l. Translated, these mean ‘nanograms per millileter’ and ‘nanomoles per liter’. Don’t get confused with these differences, they are exactly the same.

Much as if you reported your driving speed in miles per hour or kilometers per hour. Each just uses a different measuring ‘tool’. Also notice that the lowest optimal number is almost double the lowest normal Vitamin D level. That is a HUGE difference.



The Bone Mineral Research Center at Winthrop University Hospital in Mineola, NY reports, “…optimal vitamin D status is achieved with a serum 25-hydroxyvitamin D [25(OH)D] concentration greater than 75 nmol/L.” They didn’t specifically state an upper number, but they did state that even those with Vitamin D levels greater than 220 nmol/L still had no signs of toxicity.

In 'Circulating 25-Hydroxyvitamin D Levels Indicative of Vitamin D Sufficiency: Implications for Establishing a New Effective Dietary Intake Recommendation for Vitamin D', the author states,

"...vitamin D deficiency should be defined as less than 80 nmol/L (32 ng/ml) circulating 25(OH)D. I have arbitrarily set the toxic level at
250 nmol (100 ng/ml), which is a conservative estimate,
because true vitamin D toxicity is well beyond this…"



Yet another article, 'Review of the concept of vitamin D 'sufficiency and insufficiency', the authors use this guideline. This study also uses 25(OH)D levels:

Desirable: greater than 40 ng/ml or 100 nmol/l

Hypovitaminosis D: 20- 40 ng/ml or 50 - 100 nmol/l

Insufficient: 10 - 20 ng/ml or 25 -50 mmol/l

Deficient: below 10 ng/ml or 25 nmol/l<



So, according to a variety of scientists, an optimal Vitamin D level, or what should be a Normal Vitamin D Level is between 75nmol/L - 250 nmol/L with very little risk of toxicity for healthy people.

One thing to remember is that your doctor is used to reporting only ‘abnormal’ laboratory results to patients and they generally don’t give out exact numbers, except in the case of cholesterol, because most patients don’t know what the numbers mean.

 

But for those who want to be Understanding Blood Test Results, you need to ask your doctor for the exact number and have him tell you the units measured as nanograms per millileter or nanomoles per liter. That way there is no confusion.

What do you do if you have a Low Vitamin D serum level?

You should ALWAYS discuss Vitamin D Therapy with your doctor in case there are reasons why you should not take these supplements and to keep him on board for your yearly Vitamin D serum level checks.

 

 

But most likely, he will not know what the current Vitamin D research says about Vitamin D supplementation. So keep reading to find out – you might want to print out a copy of this page and the Vitamin D Dosage page, save a copy for yourself and give a copy to your doctor.

Next --->
Vitamin D Deficiency Treatment

 

Frequently Asked Questions
About Vitamin D
How Much Should I Be Taking? What About Overdose?
What Does Vitamin D Do? What Causes Deficiency?
Don't Take That Prescription!? What Foods Have Vitamin D?

 

 

Normal Vitamin D Level Resources


 

Still Have a Question
About Vitamin D
Ask it Here

See Already Answered Questions about Vitamin D Blood Levels

Click below to see already answered questions about Vitamin D Blood Levels.

My 25-Hydroxy is off the chart at 107! What does this mean?  This is copied from the lab report exactly as it appears.


Vitamin D, 25-Hydroxy High 107.0 ng/mL 30.0-100.0
Final 12/06/2011 023

I had this ...

Vitamin D results  I just received my Vitamin D, 25-Hydroxy results and am concerned. Will you please review and determine if I need to take supplements or possibly perscribed ...

What do my Vitamin D test results mean?  I've been diagnosed with extremely deficient Vitamin D levels over the past and was given a prescription of 50,000 mg/once weekly supplements to take. I'...

My Vitamin D level was 118 ng/ml in Dec again having deficiency symptoms  My 25 OH Vit D level was tested to be 4 ng/ml in Mar 2011. I was having pain / burning sensation in heels and soles, cramps in my calf muscles, difficulty ...

why my level hasn't improved after a year of treatment  I found out that I had low vitamin D in November of 2010, my Doctor started me on a 12 week course of 50,000 units of vitamin D I do not know what my levels ...

Still not getting anywhere with my vitamin D level.  I am now in my third year of taking 50,000 units of Vitamin D. I take it once a week for 8 weeks then once a month. I also take 1,200 IU OTC vitamin ...

My Vitamin D count is high  I recently went to the ER as I was feeling very pulled down, lazy, no energy, feeling Nausea, feeling of fever, sweating in AC, body cramps, heavy breathing....

Is my Vitamin D too low?  I have been exhausted for over 6 years, now. Fatigue is pretty much my only symptom. It started when I was in the best shape of my life, working out,...

i just got a letter from my dr. that my vit d level is 13  I am a 59 year old male. I have had a triple bypass on my heart, iliac to fem bypasses on both legs, fem to fem bypass that did not work, tired all the ...

Abnormal Vitamin D Blood Levels  I have been having some problems with hair loss, fatigue, leg cramps, joint pain, redness on cheeks and nose, palpitations, frequent pleurisy or pneumonia ...

Vitamin D Level of ZERO   I'm a 32 yr old female in the UK. I've experienced many years of tiredness, aches, pains and hair loss -but i plodded on thinking that it was life in general....

Low Vitamin D levels despite large dose supplements of D3  A year ago my D level was 15-having been diagnosed and treated previously with breast cancer my doctor was alarmed and put me on 10000 iu's 5 times per ...

Vit D level 18.35 ng/E/ml  I am an RN as well. I would like to get your opinion on something. I had a Vitamin D level drawn last week, result 18.35. My physician's office just called ...

Should I see a specialist for low vitamin D level of 7?  I am a 48year old women. I have had thyroid (Hashimoto) for about 15 years. I was diagnosed with low vitamin d level of 7 about a month ago. I have had ...

Vitamin D Level of 5  Do you have a Vitamin D Level of 5? Learn why that's a BIG problem and what to do about it right here. A Vitamin D Test of 5 is a problem. Get it taken care of here...

My doctor said my level is at 22. How much D3 should I take? He prescribed D2.  My doctor prescribed D2 for my lower level of Vitamin D. After browsing your site I realize I should take D3, however, I don't know how much I should take ...

My Vitamin D Level is 10.8 Very Low  Can low Vitamin D cause fatigue and can the fatigue lead to weight gain? If I get on 50,000 Units of Vitamin D can that result in more energy which would ...

Osteopenia with a 27 vitamin D level   I am a 52 years old overweight female with a family history of Osteoporosis. I live in Jeddah, Saudi Arabia where we have lots of sun. Unfortunately,test ...

Low Vitamin D and Low Vitamin B12 Despite Eating Well  I'm a 48 year old post menopausal women. I Still mentally think I'm 30. Blood test showed that my B-12 is 220 and that my vitamin D is also low. The bones ...

Vitamin D,25 Hydroxy Total  This is what the test says

vitamin d, 25-OH, total 18 ng/ml 30-100
vitamin d,25-OH,D2 <4 ng/ml
vitamin d, 25-OH D3 18

I ...

How can my vitamin D level improve SO fast?  
I had posted a while ago and you kindly answered back, so i am giving it a go again.I am 28 years old female from France but I live in England.

In ...

Shocked to See that My Vitamin D Level is 13  I got my vitamin D level checked
I was quite shocked
I'm 22 years old female and vitamin D level is 13 ng/ml

It has been 3 months
I have started ...

Vitamin D 18- chronic pain- Relieve my fears please  I have chronic leg pain primarily when sitting or laying down. I am a new mom and fear I am suffering from something REALLY REALLY bad. I had a DVT which ...

Vitamin D Blood Test of 7  For the past year or so every time I went to my doctor for anything, he would make the observation that my thyroid was enlarged, yet test always showed ...

WHEN TO RETEST VITAMIN D LEVELS?  I JUST HAD A BLOOD TEST AND MY VIT D LEVEL WAS APPROX. 20. MY MD TOLD ME TO TAKE 2000 UNITS OF VITAMIN D. WHEN DO I GET RETESTED AFTER STARTING MY NEW ...

Lowest Vitamin D Level Compatible with Life  About 2 months ago, my PCP tested my vitamin D level because of my diagnosis of fibromyalgia and extreme fatigue. My level was 6. That's right--SIX!! He ...

Could Low Vitamin D Levels Be Inherited?  I am 43 and my mom is 63 and my daughter is 12. My mom has suffered with joint & muscle pain, depression, and a multitude of other symptoms for years....

Vitamin D Level of 25  I had my Vitamin D level tested and it was 25. My rheumatologist put me on 50,000 iu per week for 8 weeks. I had another blood test after the 8 weeks, and ...

What do Vit D Blood test results of 103 ng/ml mean?  I live in the Himalayas of India and have been an author who seldom stepped out of the house and was clearly Vit D deficient. I had no blood tests done ...

How much D3 to raise level from 22 to normal for teenager?  My daughter is constantly getting every cold and virus going around. She is like the canary in the coal mine and the first one to get anything before ...

Dont know who to believe about Vitamin D  I have always had aches and pains, however the last year the aches and pains have increased, I have swelling on my right knee, fatigue, hair falling out,...

My Doctor Says My Vitamin D Level Is Perfect...  My vitamin D results just came back and I am a little confused. The test results were reported by LabCorp.

My vitamin D level is 36.4 ng/ml. For LabCorp,...

Is a Vitamin D Level of 10 Bad?  I went to the doctor (endocrinologist) he ordered my blood work and this time because my Lupus was acting up, he ordered vitamin D to be checked. It was ...

Severe Vitamin D Deficiency  What is a Severe Vitamin D Deficiency, what if you have extremely low vitamin d levels? Find out the answers about vitamin d deficiency here...

My Vitamin D level came back 16.   My doctor thought I might have a vitamin D deficiency based on my depression, tiredness and chronic hip pain so he ordered a vitamin D test. It came back ...

Vitamin D Level of 28 nmol/L  I have tested my vitamin 25(OH)D2 and 25(OH)D3 level and it is 28 nmol/l and the normal range is written on the result paper to be 75-200 nmol/L,and 11 ...

My Vitamin D Level is 19 ??  I was told my Vitamin D level is 19 ??

That sounds very very low to me!

My doctor recommended 50,000 IU's of vitamin D per week. Is this normal?...

Vitamin D Level of 8  I have Crohn's Disease which is in remission- just diagnosed with Rheumatoid Arthritis and was told that my vitamin D level is 8 (don't know name of blood ...

My 25hydro vit d is low but my 1,25 dihydroxy vit d is average?  I am a bit concerned because my 25 Hydroxy vitamin D is low at 60nmol/l but my 1,25 dihydroxy vit d is normal at 100 (range 60-149).

I am happy to supplement ...

Vitamin D Test Results  Vitamin D Test Results. What do your Vitamin D Test Results Mean

My Doctor Said Not to Worry About My Vitamin D Level  I called to ask my Dr what my report said on the Vitamin D test I did and the nurse reported that my number was 14.3 and that the Dr didn't call me because ...

Can't find a doctor knowledgeble in vitamin D- need advice  Last March during a routine physical I told my doctor I was not feeling well. She told me it was part of aging because everything was fine with my check-...

Had Vitamin D Injections Last Year and I'm Deficient Again  One year back I was having pain on the bottom of my feet. My doctor got my vitamin d test it was very much below the normal range then I got Vitamin D ...

My Vitamin D Level is 22 and I have MS  My Vitamin D Level is 22 and I have MS...What does that mean?

He also told my wife to get some vitamin d supplements (vitamin d3 at 2000 units) to ...

Safe level of Vitamin D in the blood for Women  I would like to know what is the safe level of Vitamin D in the blood. what is the correct reading range for a women in her 50's?

Photo by Looking ...

My Vitamin D level is 36  I talked to my endocrinologist she thinks that my level of 36 ng/ml is fine. She is terrified of D toxicity - I take D3 50000IU every 3 weeks and in 4 ...

High Vitamin D Levels  Do You Have a High Vitamin D Level? Don't be so sure. WHICH vitamin d level is high, there is more than one vitamin d level

Fasting Vitamin D Level  My Doctor said my level is 12? I'm going for a fasting blood test tommorrow?

Is 12 very low?

Will the fasting test be more accurate?

Photo ...

What is My Vitamin D Level Supposed to Be?  My vitamin D level is 64. Doctor was stunned. My blood is 16. He figures I absorb and retain my food intake incredibly well. I am low in potassium ...

Vitamin D2 Level  Want to Know More about your Vitamin D2 Level? You've come to the right place to find out about 25 hydroxy vitamin d2 levels and levels of vitamin d2 in the blood...

How Low is my Vitamin D Level 

I had a blood test and my vitamin D level was 28.2 the doctor said it was low.

How low IS my vitamin D level?



Photo by Lhoon
...

low vitamin d level  My vitamin d level is 15, what am I in danger of if it does not increase in a timely matter?

What symptoms will my body exhibit?


I am a 49 ...

Vitamin D Level of 23  I had a blood test and my Vitamin D Level is 23 ng/ml. Could that be the reason that I am constantly exhausted and even more depressed then normal?

Vitamin D Level of 6  What if your vitamin d level is 6, should you be worried? Read this page on what a level of Vitamin d of 6 really means and what to do about it.

My Vitamin D Serum Level is 16  I had a Vitamin D blood test that showed my Vitamin D Serum Level is 16 ng/ml and my doctor told me to take 2000 IU's of Vitamin D per day.

I also ...

Vitamin D and Vitamin B 12 Deficiencies  I know have a deficiency of Vitamin D and I also have Vitamin B 12 deficiency. Does this mean something serious?

My vitamin D level is 17!  Great Site by the way. I'm happy that I finally found one that gives some valuable insight into this unlikely deficiency.

I have had quite a few things ...

Vitamin D Level of 12  Concerned about a Vitamin D Level of 12? You should be! Read more here about having a low vitamin d level 12. Get help and get answers for when my vitamin d level is 12

Vitamin D Level of 4  Do you have a Vitamin D Level of 4? Learn why that's a BIG problem and what to do about it right here. A vitamin d level of less than 4 is a problem. Get it taken care of here...



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