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

Your BUN level of 21 is a High BUN level.

High BUN levels may signal health problems. Generally, levels between 6 mg/dL to 20 mg/dL are considered normal. However, if your levels fall outside this range, it is important to seek medical advice. Consulting a doctor for abnormal creatinine levels is recommended.

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 review it. Within 12 hours, you'll receive a detailed analysis and precise treatment guidance via email. If you have other blood test results besides BUN, please upload those as well. A comprehensive diagnosis often depends on evaluating all abnormalities for an accurate assessment. Upload blood test report now

1,51,150

Total number of patients treated

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

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

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

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.

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

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 to measure BUN levels. A pathologist, a specialist in disease study, will collect a small blood sample from your veins using a needle. Your BUN test results are typically available within a few hours after the procedure.

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