What causes high RBC and low RDW?

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

If your RBC is in between 4.5 mil/uL and 5.5 mil/uL and your RDW is in between 11.6 % and 14 % then you need not worry as these are the normal ranges for RBC and RDW 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	4.671
5-10 years	4.848
10-15 years	5.032
15-20 years	5.223
20-25 years	5.421
25-30 years	5.413
30-35 years	5.405
35-40 years	5.397
40-45 years	5.389
45-50 years	5.381
50-55 years	5.373
55-60 years	5.365
60-70 years	5.357
70-80 years	5.35
80-90 years	5.342
90-100 years	5.334
>100 years	5.327

*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

1,37,160

Total number of patients treated

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 RDW : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	12.041
5-10 years	12.499
10-15 years	12.974
15-20 years	13.467
20-25 years	13.979
25-30 years	13.959
30-35 years	13.938
35-40 years	13.918
40-45 years	13.898
45-50 years	13.878
50-55 years	13.858
55-60 years	13.838
60-70 years	13.818
70-80 years	13.798
80-90 years	13.778
90-100 years	13.759
>100 years	13.739

High RBC and low RDW can be caused by a lot of reasons. If you take RBC and RDW blood tests and the results are higher than 5.5 mil/uL for RBC and lower than 11.6 % for RDW, 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.

This page has got the maximum number of views from the below mentioned cities (traffic in last 30 days):

How the RBC and RDW Tests Are Done :

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