What causes high Creatinine and low BUN?

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

If your Creatinine is in between 0.9 mg/dL and 1.3 mg/dL and your BUN is in between 6 mg/dL and 20 mg/dL then you need not worry as these are the normal ranges for Creatinine and BUN 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 Creatinine : 0.9 - 1.3 mg/dL

Ideal values of Creatinine depending on age :

Age	Ideal Creatinine value
<5 years	0.913
5-10 years	0.926
10-15 years	0.939
15-20 years	0.952
20-25 years	0.965
25-30 years	0.979
30-35 years	0.993
35-40 years	1.007
40-45 years	1.021
45-50 years	1.035
50-55 years	1.05
55-60 years	1.065
60-70 years	1.08
70-80 years	1.095
80-90 years	1.11
90-100 years	1.126
>100 years	1.142

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

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

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

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

• Damage to or swelling of blood vessels in the kidneys.
• Bacterial infection of the kidneys (pyelonephritis)
• Death of cells in the kidneys' small tubes (acute tubular necrosis)
• Conditions that can block the flow of urine in the urinary tract, such as prostate disease or kidney stone
• Reduced blood flow to the kidney due to shock, dehydration, congestive heart failure, atherosclerosis, or complications of diabetes

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

Normal range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.085
5-10 years	6.171
10-15 years	6.258
15-20 years	6.346
20-25 years	6.435
25-30 years	6.526
30-35 years	6.618
35-40 years	6.711
40-45 years	6.806
45-50 years	6.902
50-55 years	6.999
55-60 years	7.098
60-70 years	7.198
70-80 years	7.299
80-90 years	7.402
90-100 years	7.506
>100 years	7.612

High Creatinine and low BUN can be caused by a lot of reasons. If you take Creatinine and BUN blood tests and the results are higher than 1.3 mg/dL for Creatinine and lower than 6 mg/dL for BUN, 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 Creatinine and BUN Tests Are Done :

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