What does high BUN and ESR mean in blood test?

High BUN and ESR can be caused by numerous problems.

High levels of BUN and ESR 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 ESR level is between 0 mg/dL to 14 mm/hr, then your body does not have any underlying health problems. But if BUN and ESR 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	6.489
30-35 years	6.574
35-40 years	6.661
40-45 years	6.749
45-50 years	6.838
50-55 years	6.928
55-60 years	7.019
60-70 years	7.111
70-80 years	7.205
80-90 years	7.3
90-100 years	7.396
>100 years	7.493

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

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Normal ESR range : 0 - 14 mm/hr

Age-wise ideal ESR level in blood:

Age	Ideal ESR value
<5 years	2.026
5-10 years	2.053
10-15 years	2.08
15-20 years	2.107
20-25 years	2.135
25-30 years	2.163
30-35 years	2.191
35-40 years	2.22
40-45 years	2.249
45-50 years	2.279
50-55 years	2.309
55-60 years	2.339
60-70 years	2.37
70-80 years	2.401
80-90 years	2.433
90-100 years	2.465
>100 years	2.497

High BUN and ESR 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 14 mm/hr for ESR, 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 ESR test. In most hospitals BUN and ESR 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.