What does high BUN and Creatinine mean in blood test?

High BUN and Creatinine can be caused by numerous problems.

High levels of BUN and Creatinine in the blood indicate a variety of health problems. If your blood BUN level is between 6 mg/dL to 20 mg/dL and the Creatinine level is between 0.9 mg/dL to 1.3 mg/dL, then your body does not have any underlying health problems. But if BUN and Creatinine levels exceed these levels, you should see a doctor immediately.

Normal BUN range : 6 - 20 mg/dL

Age-wise ideal BUN level in blood:
Age Ideal BUN value
<5 years 6.081
5-10 years 6.163
10-15 years 6.246
15-20 years 6.33
20-25 years 6.415
25-30 years 6.501
30-35 years 6.588
35-40 years 6.676
40-45 years 6.766
45-50 years 6.857
50-55 years 6.949
55-60 years 7.042
60-70 years 7.137
70-80 years 7.233
80-90 years 7.33
90-100 years 7.428
>100 years 7.528

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

Your BUN result may be wrong. Click to know the reason in detail

Click here to know Symptoms of High BUN

Click here to know Symptoms of High Creatinine

Besides Lab test failures, there are many other reasons for inaccurate blood results. Know the common reasons for inaccurate blood test results

Can Low or High BUN cause Heart Attack? Click here to know

Normal Creatinine range : 0.9 - 1.3 mg/dL

Age-wise ideal Creatinine level in blood:
Age Ideal Creatinine value
<5 years 0.912
5-10 years 0.924
10-15 years 0.936
15-20 years 0.949
20-25 years 0.962
25-30 years 0.975
30-35 years 0.988
35-40 years 1.001
40-45 years 1.014
45-50 years 1.028
50-55 years 1.042
55-60 years 1.056
60-70 years 1.07
70-80 years 1.084
80-90 years 1.099
90-100 years 1.114
>100 years 1.129

Click here to know Symptoms of High BUN

Click here to know Symptoms of High Creatinine

Can Low or High BUN cause Heart Attack? Click here to know

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High BUN and Creatinine levels in the blood can cause a number of health problems. Your GP may recommend follow-up tests to get an important picture of your overall health and well-being. If the results are greater than 20 mg/dL for BUN and more than 1.3 mg/dL for Creatinine, you may also need some follow-up tests that will help detect the underlying disease early.

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How is a blood test performed in the lab?

Depending on the symptoms you are experiencing, your doctor may order a BUN and Creatinine test. In most hospitals BUN and Creatinine results can be obtained within three to six hours after blood is taken. The blood is usually drawn from a vein on the inside of the elbow or the back of the hand. Drink plenty of water before your appointment. If you experience any symptoms that you are concerned about are out of the ordinary, call your doctor immediately.

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