Is BUN 2 low, normal or dangerous? What does Blood urea nitrogen level 2 mean?

📅 Medical Review Date: September 25, 2025

Your BUN level of 2 is a Low BUN level.

A BUN level of 2 mg/dL usually means the liver is not producing enough urea or the kidneys are filtering too efficiently. It suggests low protein intake or liver disease. Low levels of BUN can cause fatigue, weakness, malnutrition symptoms, and poor healing. This can be caused by low protein diet, liver failure, pregnancy, or overhydration. Further tests are often needed to identify the cause and guide appropriate treatment.

Low BUN levels may indicate underlying health problems. The normal range is typically between 6 mg/dL and 20 mg/dL. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

The normal BUN range for men is :6 - 20 mg/dL

Ideal values of BUN depending on age (male) :

Age	Ideal BUN value
<5 years	6.12
5-10 years	6.242
10-15 years	6.367
15-20 years	6.494
20-25 years	6.624
25-30 years	6.756
30-35 years	6.891
35-40 years	7.029
40-45 years	7.17
45-50 years	7.313
50-55 years	7.459
55-60 years	7.608
60-70 years	7.76
70-80 years	7.915
80-90 years	8.073
90-100 years	8.234
>100 years	8.399

*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. You'll receive a detailed analysis and personalized treatment guidance via email within 12 hours. If you have additional blood test results besides BUN, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

1,51,150

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A video message on the treatment of your low BUN level

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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 low 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	6.124
5-10 years	6.25
10-15 years	6.379
15-20 years	6.51
20-25 years	6.644
25-30 years	6.781
30-35 years	6.921
35-40 years	7.064
40-45 years	7.21
45-50 years	7.359
50-55 years	7.511
55-60 years	7.666
60-70 years	7.824
70-80 years	7.985
80-90 years	8.149
90-100 years	8.317
>100 years	8.488

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 orders a BUN test, it involves a straightforward blood draw to measure your BUN levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your BUN test results are usually available within a few hours.

Medical References

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

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