What causes high Creatinine and low BUN Creatinine ratio?

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

If your Creatinine is in between 0.9 mg/dL and 1.3 mg/dL and your BUN Creatinine ratio is in between 5 Ratio and 15 Ratio then you need not worry as these are the normal ranges for Creatinine and BUN Creatinine ratio respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

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

• Damage to or swelling of blood vessels in the kidneys.
• Bacterial infection of the kidneys (pyelonephritis)
• 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

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

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	0.966
25-30 years	0.98
30-35 years	0.994
35-40 years	1.008
40-45 years	1.022
45-50 years	1.037
50-55 years	1.052
55-60 years	1.067
60-70 years	1.082
70-80 years	1.097
80-90 years	1.113
90-100 years	1.129
>100 years	1.145

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

Normal range of BUN Creatinine ratio : 5 - 15 Ratio

Ideal values of BUN Creatinine ratio depending on age :

Age	Ideal BUN Creatinine ratio value
<5 years	5.072
5-10 years	5.145
10-15 years	5.219
15-20 years	5.294
20-25 years	5.37
25-30 years	5.447
30-35 years	5.525
35-40 years	5.604
40-45 years	5.684
45-50 years	5.765
50-55 years	5.847
55-60 years	5.931
60-70 years	6.016
70-80 years	6.102
80-90 years	6.189
90-100 years	6.278
>100 years	6.368

High Creatinine and low BUN Creatinine ratio can be caused by a lot of reasons. If you take Creatinine and BUN Creatinine ratio blood tests and the results are higher than 1.3 mg/dL for Creatinine and lower than 5 Ratio for BUN Creatinine ratio, 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 Creatinine ratio Tests Are Done :

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

Medical References

• Mayo Clinic – Creatinine test
• MedlinePlus – Creatinine Test
• Cleveland Clinic – Creatinine Clearance Test: Purpose, Levels & Results