What causes high BUN and low CRP?

High BUN and low CRP can be caused by many reasons.

If your BUN is in between 6 mg/dL and 20 mg/dL and your CRP is in between 0 mg/L and 3 mg/L then you need not worry as these are the normal ranges for BUN and CRP 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 6.663
50-55 years 6.733
55-60 years 6.804
60-70 years 6.876
70-80 years 6.948
80-90 years 7.021
90-100 years 7.095
>100 years 7.17

If you want your blood test report to be interpreted by BUN specialist, then you can upload your report. Our BUN expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

Your BUN result may be wrong. Click to know the reason in detail

Click here to know Symptoms of High BUN

Click here to know Symptoms of Low CRP

Besides Lab test failures, there are many other reasons for inaccurate blood results. Know the common reasons for inaccurate blood test results

Can Low or High BUN cause Heart Attack? Click here to know

Normal range of BUN found among women : - mg/dL

Ideal values of CRP depending on age :
Age Ideal CRP value
<5 years 0.11116
5-10 years 0.11233
10-15 years 0.11351
15-20 years 0.11471
20-25 years 0.11592
25-30 years 0.11714
30-35 years 0.11837
35-40 years 0.11962
40-45 years 0.12088
45-50 years 0.12215
50-55 years 0.12344
55-60 years 0.12474
60-70 years 0.12605
70-80 years 0.12738
80-90 years 0.12872
90-100 years 0.13008
>100 years 0.13145

Click here to know Symptoms of High BUN

Click here to know Symptoms of Low CRP

Can Low or High BUN cause Heart Attack? Click here to know

Click here to upload your blood test report

Click here to consult a doctor for your Low BUN problem

High BUN and low CRP can be caused by a lot of reasons. If you take BUN and CRP blood tests and the results are higher than 20 mg/dL for BUN and lower than 0 mg/L for CRP, 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 CRP Tests Are Done :

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

Click here to upload your blood test report

Click here to consult a doctor for your Low BUN problem

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