What does high BUN and WBC mean in blood test?

High BUN and WBC can be caused by numerous problems.

High levels of BUN and WBC 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 WBC level is between 4 mg/dL to 11 thou/uL, then your body does not have any underlying health problems. But if BUN and WBC 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	6.078
5-10 years	6.157
10-15 years	6.237
15-20 years	6.318
20-25 years	6.4
25-30 years	6.483
30-35 years	6.567
35-40 years	6.653
40-45 years	6.74
45-50 years	6.828
50-55 years	6.917
55-60 years	7.007
60-70 years	7.098
70-80 years	7.19
80-90 years	7.284
90-100 years	7.379
>100 years	7.475

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

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Normal WBC range : 4 - 11 thou/uL

Age-wise ideal WBC level in blood:

Age	Ideal WBC value
<5 years	4.052
5-10 years	4.105
10-15 years	4.158
15-20 years	4.212
20-25 years	4.267
25-30 years	4.323
30-35 years	4.379
35-40 years	4.436
40-45 years	4.494
45-50 years	4.553
50-55 years	4.612
55-60 years	4.672
60-70 years	4.733
70-80 years	4.795
80-90 years	4.857
90-100 years	4.92
>100 years	4.984

High BUN and WBC 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 11 thou/uL for WBC, 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 WBC test. In most hospitals BUN and WBC 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.