What causes high RBC and low Hematocrit?

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

If your RBC is in between 4.5 mil/uL and 5.5 mil/uL and your Hematocrit is in between 40 % and 50 % then you need not worry as these are the normal ranges for RBC and Hematocrit 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 RBC : 4.5 - 5.5 mil/uL

Ideal values of RBC depending on age :

Age	Ideal RBC value
<5 years	4.653
5-10 years	4.811
10-15 years	4.975
15-20 years	5.144
20-25 years	5.319
25-30 years	5.5
30-35 years	5.494
35-40 years	5.488
40-45 years	5.482
45-50 years	5.475
50-55 years	5.469
55-60 years	5.463
60-70 years	5.457
70-80 years	5.451
80-90 years	5.444
90-100 years	5.438
>100 years	5.432

*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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RBC 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 Hematocrit : 40 - 50 %

Ideal values of Hematocrit depending on age :

Age	Ideal Hematocrit value
<5 years	41.36
5-10 years	42.766
10-15 years	44.22
15-20 years	45.723
20-25 years	47.278
25-30 years	48.885
30-35 years	48.828
35-40 years	48.771
40-45 years	48.714
45-50 years	48.657
50-55 years	48.6
55-60 years	48.543
60-70 years	48.486
70-80 years	48.43
80-90 years	48.374
90-100 years	48.318
>100 years	49.961

High RBC and low Hematocrit can be caused by a lot of reasons. If you take RBC and Hematocrit blood tests and the results are higher than 5.5 mil/uL for RBC and lower than 40 % for Hematocrit, 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 Hematocrit Tests Are Done :

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

Medical References

• MedlinePlus – Red Blood Cell (RBC) Count
• WebMD – Red Blood Cell (RBC) Count Test: Results and What They Mean
• MedlinePlus – Red Blood Cell (RBC) Indices