What causes high RDW and low RDW CV?

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

If your RDW is in between 11.6 % and 14 % and your RDW CV is in between 11.6 % and 14 % then you need not worry as these are the normal ranges for RDW and RDW CV 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 RDW : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	11.912
5-10 years	12.232
10-15 years	12.561
15-20 years	12.899
20-25 years	13.246
25-30 years	13.602
30-35 years	13.968
35-40 years	13.958
40-45 years	13.947
45-50 years	13.937
50-55 years	13.927
55-60 years	13.917
60-70 years	13.907
70-80 years	13.897
80-90 years	13.887
90-100 years	13.877
>100 years	13.867

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

If you want your blood test report to be interpreted by RDW specialist, then you can upload your report. Our RDW 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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Some examples of conditions that increase or decrease RDW levels include:

• Crohn's disease
• Chronic liver disease
• Thalassemia, an inherited blood disorder
• An iron or vitamin deficiency
• Heart disease

If you want your blood test report to be interpreted by RDW specialist, you can upload your report. Our RDW 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 CV : 11.6 - 14 %

Ideal values of RDW CV depending on age :

Age	Ideal RDW CV value
<5 years	11.912
5-10 years	12.232
10-15 years	12.561
15-20 years	12.899
20-25 years	13.246
25-30 years	13.602
30-35 years	13.968
35-40 years	13.958
40-45 years	13.947
45-50 years	13.937
50-55 years	13.927
55-60 years	13.917
60-70 years	13.907
70-80 years	13.897
80-90 years	13.887
90-100 years	13.877
>100 years	13.867

High RDW and low RDW CV can be caused by a lot of reasons. If you take RDW and RDW CV blood tests and the results are higher than 14 % for RDW and lower than 11.6 % for RDW CV, 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 RDW and RDW CV Tests Are Done :

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

Medical References

• Cleveland Clinic – RDW Blood Test: What It Is, Procedure & Results
• MedlinePlus – RDW (Red Cell Distribution Width)
• NIH – High red blood cell distribution width is closely associated with risk of carotid artery atherosclerosis