What causes high RBC and low ESR?

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

If your RBC is in between 4.5 mil/uL and 5.5 mil/uL and your ESR is in between 0.1 mm/hr and 14 mm/hr then you need not worry as these are the normal ranges for RBC and ESR 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 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

RBC treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Normal range of RBC : 4.5 - 5.5 mil/uL

Ideal values of RBC depending on age :

Age	Ideal RBC value
<5 years	4.707
5-10 years	4.924
10-15 years	5.151
15-20 years	5.388
20-25 years	5.377
25-30 years	5.365
30-35 years	5.354
35-40 years	5.342
40-45 years	5.331
45-50 years	5.32
50-55 years	5.309
55-60 years	5.298
60-70 years	5.287
70-80 years	5.276
80-90 years	5.265
90-100 years	5.254
>100 years	5.496

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

Normal range of ESR : 0.1 - 14 mm/hr

Ideal values of ESR depending on age :

Age	Ideal ESR value
<5 years	2.092
5-10 years	2.188
10-15 years	2.289
15-20 years	2.394
20-25 years	2.504
25-30 years	2.619
30-35 years	2.739
35-40 years	2.865
40-45 years	2.997
45-50 years	3.135
50-55 years	3.279
55-60 years	3.43
60-70 years	3.588
70-80 years	3.753
80-90 years	3.926
90-100 years	4.107
>100 years	4.296

High RBC and low ESR can be caused by a lot of reasons. If you take RBC and ESR blood tests and the results are higher than 5.5 mil/uL for RBC and lower than 0.1 mm/hr for ESR, 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 ESR Tests Are Done :

If your doctor wants RBC and ESR tests on you, you may need to go through these tests. During the RBC and ESR 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 ESR 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