Is RDW 23.4 high, normal or dangerous? What does Red cell distribution width level 23.4 mean?

📅 Medical Review Date: January 14, 2026

Your RDW level of 23.4 is a High RDW level.

An RDW level of 23.4 % usually means there is significant variation in red blood cell sizes. It suggests an underlying condition affecting red blood cell production. High levels of RDW can cause fatigue, weakness, pale skin, cold hands and feet, brittle nails, and shortness of breath. This can be caused by iron deficiency anemia, vitamin B12 deficiency, folate deficiency, or mixed anemias. Further tests are often needed to identify the cause and guide appropriate treatment.

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.

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

Ideal values of RDW depending on age (male) :

Age	Ideal RDW value
<5 years	11.871
5-10 years	12.149
10-15 years	12.433
15-20 years	12.724
20-25 years	13.022
25-30 years	13.327
30-35 years	13.639
35-40 years	13.958
40-45 years	13.951
45-50 years	13.943
50-55 years	13.935
55-60 years	13.927
60-70 years	13.919
70-80 years	13.912
80-90 years	13.905
90-100 years	13.897
>100 years	13.889

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

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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

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

Ideal values of RDW depending on age (female) :

Age	Ideal RDW value
<5 years	11.88
5-10 years	12.166
10-15 years	12.459
15-20 years	12.759
20-25 years	13.067
25-30 years	13.382
30-35 years	13.705
35-40 years	13.697
40-45 years	13.689
45-50 years	13.681
50-55 years	13.673
55-60 years	13.665
60-70 years	13.994
70-80 years	13.986
80-90 years	13.978
90-100 years	13.97
>100 years	13.962

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

• 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

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