Is RDW 22.1 high, normal or dangerous? What does Red cell distribution width level 22.1 mean?

đź“… Medical Review Date: November 4, 2025

RDW 22.1

Your RDW level of 22.1 is a High RDW level.

High RDW levels may indicate underlying health problems. The normal range is typically between 11.6 % and 14 %. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

Important - Scroll to the end of this article to see how our patients managed their high RDW levels 

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The normal RDW range for men is :11.6 - 14 %

Ideal values of RDW depending on age (male) :
Age Ideal RDW value
<5 years 11.856
5-10 years 12.118
10-15 years 12.386
15-20 years 12.66
20-25 years 12.94
25-30 years 13.226
30-35 years 13.518
35-40 years 13.817
40-45 years 13.81
45-50 years 13.803
50-55 years 13.796
55-60 years 13.789
60-70 years 13.783
70-80 years 13.777
80-90 years 13.77
90-100 years 13.763
>100 years 13.756

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

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1,51,150

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

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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
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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 

anti inflammatory diet plan

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

Ideal values of RDW depending on age (female) :
AgeIdeal RDW value
<5 years 11.864
5-10 years 12.134
10-15 years 12.41
15-20 years 12.692
20-25 years 12.981
25-30 years 13.276
30-35 years 13.578
35-40 years 13.887
40-45 years 13.88
45-50 years 13.873
50-55 years 13.866
55-60 years 13.859
60-70 years 13.851
70-80 years 13.844
80-90 years 13.837
90-100 years 13.83
>100 years 13.823
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 orders a RDW test, it involves a straightforward blood draw to measure your RDW levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your RDW test results are usually available within a few hours.

Medical References

RDW treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Symptoms
Dr. Hernandez - Pathologist

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Dr. Hernandez, MD

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Laboratory Medicine Specialist

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Laboratory Expertise:

  • Clinical Pathology Certification
  • 15+ years lab analysis experience
  • Specializes in test interpretation
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Medical Disclaimer: This information is for educational purposes and should not replace professional medical advice. Consult your physician for diagnosis and treatment. Read full disclaimer.

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