Is BUN 21 high, normal or dangerous? What does Blood urea nitrogen level 21 mean?

BUN 21

Your BUN level of 21 is a High BUN level.

High BUN levels could indicate health issues. Typically, levels between 6 mg/dL to 20 mg/dL suggest no concerns. However, deviations from this range warrant prompt medical attention. Consulting a doctor for abnormal levels is advisable.

Important - Go to the end of this article and read how our patients treated their high BUN levels 

Contact a doctor

Normal range of BUN found among men :6 - 20 mg/dL

Ideal values of BUN depending on age (male) :
Age Ideal BUN value
<5 years 6.126
5-10 years 6.255
10-15 years 6.386
15-20 years 6.52
20-25 years 6.657
25-30 years 6.797
30-35 years 6.94
35-40 years 7.086
40-45 years 7.235
45-50 years 7.387
50-55 years 7.542
55-60 years 7.7
60-70 years 7.862
70-80 years 8.027
80-90 years 8.196
90-100 years 8.368
>100 years 8.544

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

Get Advice via Email : Send us your blood test report, and our BUN experts will check it. Within 12 hours, expect a detailed analysis and precise treatment guidance delivered to your email. If you've had additional blood tests apart from BUN, please upload those too. A thorough diagnosis often relies on assessing all abnormalities for an accurate assessment. Upload blood test report now

1,37,160

Total number of patients treated

Important - Read more questions about high BUN levels after this video message 

A video message on the treatment of your high BUN level

If you want your blood test report to be interpreted by BUN specialist, 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

Important - At the end of this article read how our patients treated their high BUN levels 

Some examples of conditions that increase or decrease BUN levels include:

  • Kidney failure
  • Decreased blood flow to the kidneys
  • Congestive heart failure
  • Dehydration
  • Conditions that can block the flow of urine
Contact a doctor

Receive world-class medical opinion about your high BUN levels over email.Upload blood test report now

Important - At the end of this article read how our patients treated their high BUN levels 

You can learn techniques to reduce high BUN levels by reading this 100 page eBook. This book is written by a patient himself and reviewed by the doctors of Medchunk. Read eBook here.

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Normal range of BUN found among women :6-20 mg/dL

Ideal values of BUN depending on age (female) :
Age Ideal BUN value
<5 years 6.13
5-10 years 6.263
10-15 years 6.398
15-20 years 6.536
20-25 years 6.677
25-30 years 6.821
30-35 years 6.969
35-40 years 7.12
40-45 years 7.274
45-50 years 7.431
50-55 years 7.592
55-60 years 7.756
60-70 years 7.924
70-80 years 8.095
80-90 years 8.27
90-100 years 8.449
>100 years 8.632
Chest pain

Can Low or High BUN cause Heart Problems?

Read on to know how abnormal BUN affects heart

Know more

If you take a BUN blood test and the results are not in the normal range (6-20 mg/dL), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the BUN Test Is Done :

When your doctor recommends a BUN test, you'll likely undergo a simple blood draw specifically targeting the measurement of BUN. A pathologist, a specialist in studying diseases, will collect a small blood sample from your veins using a needle. Your BUN test results will typically be available within a few hours after this procedure.

BUN treatment - Click to read 10 GOLDEN ARTICLES on Kidney health

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Dr. Dwayne Michaels
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Dr. Dwayne Michaels
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