Is RDW 21.1 high, normal or dangerous? What does Red cell distribution width level 21.1 mean?

RDW 21.1

Your RDW level of 21.1 is a High RDW level.

High RDW levels could indicate health issues. Typically, levels between 11.6 % to 14 % suggest no concerns. However, deviations from this range warrant prompt medical attention. Consulting a doctor for abnormal levels is advisable.

Important - Go to the end of this article and read how our patients treated their high RDW levels 

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Normal range of RDW found among men :11.6 - 14 %

Ideal values of RDW depending on age (male) :
Age Ideal RDW value
<5 years 11.845
5-10 years 12.095
10-15 years 12.35
15-20 years 12.611
20-25 years 12.877
25-30 years 13.149
30-35 years 13.426
35-40 years 13.709
40-45 years 13.998
45-50 years 13.991
50-55 years 13.985
55-60 years 13.979
60-70 years 13.973
70-80 years 13.967
80-90 years 13.961
90-100 years 13.955
>100 years 13.948

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

Get Advice via Email : Send us your blood test report, and our RDW experts will check it. Within 12 hours, expect a detailed analysis and precise treatment guidance delivered to your email. If you've had additional blood tests apart from RDW, please upload those too. A thorough diagnosis often relies on assessing all abnormalities for an accurate assessment. Upload blood test report now

1,37,160

Total number of patients treated

Important - Read more questions about high RDW levels after this video message 

A video message on the treatment of your high RDW level

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

Important - At the end of this article read how our patients treated their high RDW levels 

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
Contact a doctor

Receive world-class medical opinion about your high RDW levels over email.Upload blood test report now

Important - At the end of this article read how our patients treated their high RDW levels 

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Normal range of RDW found among women :11.6-14 %

Ideal values of RDW depending on age (female) :
Age Ideal RDW value
<5 years 11.852
5-10 years 12.11
10-15 years 12.373
15-20 years 12.642
20-25 years 12.917
25-30 years 13.198
30-35 years 13.485
35-40 years 13.778
40-45 years 13.771
45-50 years 13.764
50-55 years 13.757
55-60 years 13.751
60-70 years 13.745
70-80 years 13.739
80-90 years 13.733
90-100 years 13.726
>100 years 13.719
Chest pain

Can Low or High RDW cause Heart Problems?

Read on to know how abnormal RDW affects heart

Know more

If you take a RDW blood test and the results are not in the normal range (11.6-14 %), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the RDW Test Is Done :

When your doctor recommends a RDW test, you'll likely undergo a simple blood draw specifically targeting the measurement of RDW. A pathologist, a specialist in studying diseases, will collect a small blood sample from your veins using a needle. Your RDW test results will typically be available within a few hours after this procedure.

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Dr. Dwayne Michaels
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