What causes high RDW and low ESR?

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

If your RDW is in between 11.6 % and 14 % 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 RDW and ESR 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	11.851
5-10 years	12.107
10-15 years	12.369
15-20 years	12.636
20-25 years	12.909
25-30 years	13.188
30-35 years	13.473
35-40 years	13.764
40-45 years	13.757
45-50 years	13.75
50-55 years	13.744
55-60 years	13.738
60-70 years	13.732
70-80 years	13.726
80-90 years	13.719
90-100 years	13.712
>100 years	13.705

*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 ESR : 0.1 - 14 mm/hr

Ideal values of ESR depending on age :

Age	Ideal ESR value
<5 years	2.043
5-10 years	2.087
10-15 years	2.132
15-20 years	2.178
20-25 years	2.225
25-30 years	2.273
30-35 years	2.322
35-40 years	2.372
40-45 years	2.423
45-50 years	2.475
50-55 years	2.528
55-60 years	2.583
60-70 years	2.639
70-80 years	2.696
80-90 years	2.754
90-100 years	2.813
>100 years	2.874

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

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