What causes high RDW and low RDW SD?

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

If your RDW is in between 11.6 % and 14 % and your RDW SD is in between 39 fL and 46 fL then you need not worry as these are the normal ranges for RDW and RDW SD 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 11.913
5-10 years 12.235
10-15 years 12.565
15-20 years 12.904
20-25 years 13.252
25-30 years 13.61
30-35 years 13.977
35-40 years 13.966
40-45 years 13.956
45-50 years 13.946
50-55 years 13.936
55-60 years 13.926
60-70 years 13.916
70-80 years 13.906
80-90 years 13.895
90-100 years 13.885
>100 years 13.875

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

Your RDW result may be wrong. Click to know the reason in detail

Click here to know Symptoms of High RDW

Click here to know Symptoms of Low RDW SD

Besides Lab test failures, there are many other reasons for inaccurate blood results. Know the common reasons for inaccurate blood test results

Can Low or High RDW cause Heart Attack? Click here to know

Normal range of RDW found among women : - %

Ideal values of RDW SD depending on age :
Age Ideal RDW SD value
<5 years 40.053
5-10 years 41.134
10-15 years 42.245
15-20 years 43.386
20-25 years 44.557
25-30 years 45.76
30-35 years 45.727
35-40 years 45.694
40-45 years 45.661
45-50 years 45.628
50-55 years 45.595
55-60 years 45.562
60-70 years 45.529
70-80 years 45.496
80-90 years 45.462
90-100 years 45.428
>100 years 45.395

Click here to know Symptoms of High RDW

Click here to know Symptoms of Low RDW SD

Can Low or High RDW cause Heart Attack? Click here to know

Click here to upload your blood test report

Click here to consult a doctor for your Low RDW problem

High RDW and low RDW SD can be caused by a lot of reasons. If you take RDW and RDW SD blood tests and the results are higher than 14 % for RDW and lower than 39 fL for RDW SD, 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 SD Tests Are Done :

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

Click here to upload your blood test report

Click here to consult a doctor for your Low RDW problem

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