What causes high BUN and low Vitamin D?

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

If your BUN is in between 6 mg/dL and 20 mg/dL 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 BUN 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.

Normal range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.063
5-10 years	6.127
10-15 years	6.192
15-20 years	6.257
20-25 years	6.323
25-30 years	6.39
30-35 years	6.457
35-40 years	6.525
40-45 years	6.594
45-50 years	6.664
50-55 years	6.734
55-60 years	6.805
60-70 years	6.877
70-80 years	6.95
80-90 years	7.023
90-100 years	7.097
>100 years	7.172

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

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

Ideal values of Vitamin D depending on age :

Age	Ideal Vitamin D value
<5 years	75.792
5-10 years	76.592
10-15 years	77.401
15-20 years	78.218
20-25 years	79.044
25-30 years	79.879
30-35 years	80.723
35-40 years	81.575
40-45 years	82.436
45-50 years	83.307
50-55 years	84.187
55-60 years	85.076
60-70 years	85.974
70-80 years	86.882
80-90 years	87.799
90-100 years	88.726
>100 years	89.663

High BUN and low Vitamin D can be caused by a lot of reasons. If you take BUN and Vitamin D blood tests and the results are higher than 20 mg/dL for BUN 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 BUN and Vitamin D Tests Are Done :

If your doctor wants BUN and Vitamin D tests on you, you may need to go through these tests. During the BUN 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 BUN and Vitamin D Test reports by your pathologist.

Medical References

• Mayo Clinic – Blood urea nitrogen (BUN) test
• MedlinePlus – BUN (Blood Urea Nitrogen)
• Cleveland Clinic – Blood Urea Nitrogen (BUN): Testing, Levels & Indication