What causes high RBC and low BUN?
High RBC and low BUN can be caused by many reasons.
If your RBC is in between 4.5 mil/uL and 5.5 mil/uL 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 RBC and BUN respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.
Important - Go to the end of this article and read how our patients treated their RBC levels
Normal range of RBC : 4.5 - 5.5 mil/uL
| Age | Ideal RBC value |
|---|---|
| <5 years | 4.82 |
| 5-10 years | 5.162 |
| 10-15 years | 5.136 |
| 15-20 years | 5.11 |
| 20-25 years | 5.473 |
| 25-30 years | 5.446 |
| 30-35 years | 5.419 |
| 35-40 years | 5.392 |
| 40-45 years | 5.365 |
| 45-50 years | 5.338 |
| 50-55 years | 5.311 |
| 55-60 years | 5.284 |
| 60-70 years | 5.257 |
| 70-80 years | 5.23 |
| 80-90 years | 5.203 |
| 90-100 years | 5.176 |
| >100 years | 5.149 |
*Ideal values are calculated based on our database of patient records
If you want your blood test report to be interpreted by RBC specialist, then you can upload your report. Our RBC expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now
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Total number of patients treatedRBC treatment - Click to read 10 GOLDEN ARTICLES on Anemia
Some examples of conditions that increase or decrease RBC levels include:
- Sudden (acute) or chronic bleeding from the digestive tract
- Kidney failure—severe and chronic kidney diseases lead to decreased production of erythropoietin
- Bone marrow damage
- Conditions that cause red blood cells to be destroyed, such as hemolytic anemia caused by autoimmunity or defects in the red cell itself
- Chronic bleeding from the digestive tract
If you want your blood test report to be interpreted by RBC specialist, you can upload your report. Our RBC expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now
Normal range of BUN : 6 - 20 mg/dL
| Age | Ideal BUN value |
|---|---|
| <5 years | 6.426 |
| 5-10 years | 6.882 |
| 10-15 years | 7.371 |
| 15-20 years | 7.894 |
| 20-25 years | 8.454 |
| 25-30 years | 9.054 |
| 30-35 years | 9.697 |
| 35-40 years | 10.385 |
| 40-45 years | 11.122 |
| 45-50 years | 11.912 |
| 50-55 years | 12.758 |
| 55-60 years | 13.664 |
| 60-70 years | 14.634 |
| 70-80 years | 15.673 |
| 80-90 years | 16.786 |
| 90-100 years | 17.978 |
| >100 years | 19.254 |
Also Read : Symptoms of High RBC
Also Read : Symptoms of Low BUN
High RBC and low BUN can be caused by a lot of reasons. If you take RBC and BUN blood tests and the results are higher than 5.5 mil/uL for RBC 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 RBC and BUN Tests Are Done :
If your doctor wants RBC and BUN tests on you, you may need to go through these tests. During the RBC 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 RBC and BUN Test reports by your pathologist.
