What causes high Hematocrit and low BUN?

High Hematocrit and low BUN can be caused by many reasons.

If your Hematocrit is in between 40 % and 50 % and your BUN is in between 6 mg/dL and 20 mg/dL then you need not worry as these are the normal ranges for Hematocrit and BUN respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Some examples of conditions that can increase or decrease Hematocrit levels include:

• Damage to the bone marrow
• Kidney failure
• Excessive destruction of red blood cells
• Chronic inflammatory diseases
• Congenital heart disease

Hematocrit treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Normal range of Hematocrit : 40 - 50 %

Ideal values of Hematocrit depending on age :

Age	Ideal Hematocrit value
<5 years	40.844
5-10 years	41.706
10-15 years	42.586
15-20 years	43.485
20-25 years	44.403
25-30 years	45.34
30-35 years	46.297
35-40 years	47.274
40-45 years	48.271
45-50 years	49.29
50-55 years	49.268
55-60 years	49.247
60-70 years	49.225
70-80 years	49.203
80-90 years	49.181
90-100 years	49.159
>100 years	49.137

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

Normal range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.127
5-10 years	6.256
10-15 years	6.388
15-20 years	6.523
20-25 years	6.661
25-30 years	6.802
30-35 years	6.946
35-40 years	7.093
40-45 years	7.243
45-50 years	7.396
50-55 years	7.552
55-60 years	7.711
60-70 years	7.874
70-80 years	8.04
80-90 years	8.21
90-100 years	8.383
>100 years	8.56

High Hematocrit and low BUN can be caused by a lot of reasons. If you take Hematocrit and BUN blood tests and the results are higher than 50 % for Hematocrit and lower than 6 mg/dL for BUN, 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 Hematocrit and BUN Tests Are Done :

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

Medical References

• Cleveland Clinic – Hematocrit Test: What It Is, Levels, and High & Low Range
• Mayo Clinic – Hematocrit test
• MedlinePlus – Hematocrit Test