What causes high BUN and low Packed cell volume?

High BUN and low Packed cell volume can be caused by many reasons.

If your BUN is in between 6 mg/dL and 20 mg/dL and your Packed cell volume is in between 41 % and 49.5 % then you need not worry as these are the normal ranges for BUN and Packed cell volume respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Normal range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.064
5-10 years	6.128
10-15 years	6.193
15-20 years	6.259
20-25 years	6.325
25-30 years	6.392
30-35 years	6.46
35-40 years	6.529
40-45 years	6.598
45-50 years	6.668
50-55 years	6.739
55-60 years	6.811
60-70 years	6.883
70-80 years	6.956
80-90 years	7.03
90-100 years	7.105
>100 years	7.18

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

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Normal range of Packed cell volume : 41 - 49.5 %

Ideal values of Packed cell volume depending on age :

Age	Ideal Packed cell volume value
<5 years	41.435
5-10 years	41.875
10-15 years	42.32
15-20 years	42.769
20-25 years	43.223
25-30 years	43.682
30-35 years	44.146
35-40 years	44.615
40-45 years	45.089
45-50 years	45.568
50-55 years	46.052
55-60 years	46.541
60-70 years	47.035
70-80 years	47.535
80-90 years	48.04
90-100 years	48.55
>100 years	49.066

High BUN and low Packed cell volume can be caused by a lot of reasons. If you take BUN and Packed cell volume blood tests and the results are higher than 20 mg/dL for BUN and lower than 41 % for Packed cell volume, 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 BUN and Packed cell volume Tests Are Done :

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

Medical References

• Mayo Clinic – Blood urea nitrogen (BUN) test
• MedlinePlus – BUN (Blood Urea Nitrogen)
• Cleveland Clinic – Blood Urea Nitrogen (BUN): Testing, Levels & Indication