What causes high Vitamin B12 and low Vitamin D?

High Vitamin B12 and low Vitamin D can be caused by many reasons.

If your Vitamin B12 is in between 211 pg/mL and 911 pg/mL and your Vitamin D is in between 75 nmol/L and 250 nmol/L then you need not worry as these are the normal ranges for Vitamin B12 and Vitamin D respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Some examples of conditions that can increase or decrease Vitamin B12 levels include:

• Crohn disease
• Ulcerative colitis
• Celiac disease
• Reduced stomach acid production
• Pancreatic insufficiency

Normal range of Vitamin B12 : 211 - 911 pg/mL

Ideal values of Vitamin B12 depending on age :

Age	Ideal Vitamin B12 value
<5 years	214.705
5-10 years	218.475
10-15 years	222.311
15-20 years	226.215
20-25 years	230.187
25-30 years	234.229
30-35 years	238.342
35-40 years	242.527
40-45 years	246.786
45-50 years	251.12
50-55 years	255.53
55-60 years	260.017
60-70 years	264.583
70-80 years	269.229
80-90 years	273.957
90-100 years	278.768
>100 years	283.663

*Ideal values are calculated based on our database of patient records

Normal range of Vitamin D : 75 - 250 nmol/L

Ideal values of Vitamin D depending on age :

Age	Ideal Vitamin D value
<5 years	76.317
5-10 years	77.657
10-15 years	79.021
15-20 years	80.409
20-25 years	81.821
25-30 years	83.258
30-35 years	84.72
35-40 years	86.208
40-45 years	87.722
45-50 years	89.262
50-55 years	90.829
55-60 years	92.424
60-70 years	94.047
70-80 years	95.698
80-90 years	97.378
90-100 years	99.088
>100 years	100.828

High Vitamin B12 and low Vitamin D can be caused by a lot of reasons. If you take Vitamin B12 and Vitamin D blood tests and the results are higher than 911 pg/mL for Vitamin B12 and lower than 75 nmol/L for Vitamin D, your physician may recommend more tests to figure out the problem. You might also get these tests if your physician thinks you have some other disease.

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How the Vitamin B12 and Vitamin D Tests Are Done :

If your doctor wants Vitamin B12 and Vitamin D tests on you, you may need to go through these tests. During the Vitamin B12 and Vitamin D blood tests, a pathologist will put a needle into your veins and take out a small quantity of blood. A pathologist is a physician in the medical field who thoroughly studies the causes and effects of disease. Within a few hours you will get your Vitamin B12 and Vitamin D Test reports by your pathologist.

Medical References

• WebMD – Vitamin B12 Blood Test: Uses, Normal Range, and Results
• NIH – Vitamin B12 - Health Professional Fact Sheet
• MedlinePlus – Vitamin B12 level