What does high BUN and Bilirubin direct mean in blood test?

High BUN and Bilirubin direct can be caused by numerous problems.

High levels of BUN and Bilirubin direct 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 Bilirubin direct level is between 0 mg/dL to 0.2 mg/dL, then your body does not have any underlying health problems. But if BUN and Bilirubin direct 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 6.079
5-10 years 6.159
10-15 years 6.24
15-20 years 6.322
20-25 years 6.405
25-30 years 6.49
30-35 years 6.576
35-40 years 6.663
40-45 years 6.751
45-50 years 6.84
50-55 years 6.93
55-60 years 7.021
60-70 years 7.114
70-80 years 7.208
80-90 years 7.303
90-100 years 7.399
>100 years 7.497

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 Bilirubin direct

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 Bilirubin direct range : 0 - 0.2 mg/dL

Age-wise ideal Bilirubin direct level in blood:
Age Ideal Bilirubin direct value
<5 years 0.11145
5-10 years 0.11292
10-15 years 0.11441
15-20 years 0.11592
20-25 years 0.11745
25-30 years 0.119
30-35 years 0.12057
35-40 years 0.12216
40-45 years 0.12377
45-50 years 0.1254
50-55 years 0.12706
55-60 years 0.12874
60-70 years 0.13044
70-80 years 0.13216
80-90 years 0.1339
90-100 years 0.13567
>100 years 0.13746

Click here to know Symptoms of High BUN

Click here to know Symptoms of High Bilirubin direct

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

Click here to upload your blood test report

Click here to consult a doctor for your Low BUN problem

High BUN and Bilirubin direct 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 0.2 mg/dL for Bilirubin direct, 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 Bilirubin direct test. In most hospitals BUN and Bilirubin direct 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.

Click here to upload your blood test report

Click here to consult a doctor for your Low BUN problem

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