What causes high BUN and low Uric acid?

High BUN and low Uric acid can be caused by many reasons.

If your BUN is in between 6 mg/dL and 20 mg/dL and your Uric acid is in between 3.5 mg/dL and 7.2 mg/dL then you need not worry as these are the normal ranges for BUN and Uric acid 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	6.126
10-15 years	6.19
15-20 years	6.255
20-25 years	6.32
25-30 years	6.386
30-35 years	6.453
35-40 years	6.52
40-45 years	6.588
45-50 years	6.657
50-55 years	6.726
55-60 years	6.796
60-70 years	6.867
70-80 years	6.939
80-90 years	7.011
90-100 years	7.084
>100 years	7.158

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

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Normal range of Uric acid : 3.5 - 7.2 mg/dL

Ideal values of Uric acid depending on age :

Age	Ideal Uric acid value
<5 years	3.537
5-10 years	3.574
10-15 years	3.611
15-20 years	3.649
20-25 years	3.687
25-30 years	3.725
30-35 years	3.764
35-40 years	3.803
40-45 years	3.843
45-50 years	3.883
50-55 years	3.924
55-60 years	3.965
60-70 years	4.006
70-80 years	4.048
80-90 years	4.09
90-100 years	4.133
>100 years	4.176

High BUN and low Uric acid can be caused by a lot of reasons. If you take BUN and Uric acid blood tests and the results are higher than 20 mg/dL for BUN and lower than 3.5 mg/dL for Uric acid, 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 Uric acid Tests Are Done :

If your doctor wants BUN and Uric acid tests on you, you may need to go through these tests. During the BUN and Uric acid 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 Uric acid 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