Is RDW SD 40 normal, high or low? What does RDW SD level 40 mean?

Your RDW SD level of 40 is a Normal RDW SD level.

Normal RDW SD levels could indicate health issues. Typically, levels between 39 fL to 46 fL suggest no concerns. However, deviations from this range warrant prompt medical attention. Consulting a doctor for abnormal levels is advisable.

Normal range of RDW SD found among men :39 - 46 fL

Ideal values of RDW SD depending on age (male) :

Age	Ideal RDW SD value
<5 years	40.56
5-10 years	42.182
10-15 years	43.869
15-20 years	45.624
20-25 years	45.551
25-30 years	45.478
30-35 years	45.405
35-40 years	45.332
40-45 years	45.259
45-50 years	45.186
50-55 years	45.113
55-60 years	45.041
60-70 years	44.969
70-80 years	44.897
80-90 years	44.825
90-100 years	44.753
>100 years	44.681

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

Get Advice via Email : Send us your blood test report, and our RDW SD 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 SD, please upload those too. A thorough diagnosis often relies on assessing all abnormalities for an accurate assessment. Upload blood test report now

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Some examples of conditions that increase or decrease RDW SD levels include:

• Thalassemia, an inherited blood disorder
• Crohn's disease
• Chronic liver disease
• An iron or vitamin deficiency
• Heart disease

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

Normal range of RDW SD found among women :39-46 fL

Ideal values of RDW SD depending on age (female) :

Age	Ideal RDW SD value
<5 years	40.607
5-10 years	42.28
10-15 years	44.022
15-20 years	45.836
20-25 years	45.758
25-30 years	45.68
30-35 years	45.602
35-40 years	45.525
40-45 years	45.448
45-50 years	45.37
50-55 years	45.293
55-60 years	45.216
60-70 years	45.139
70-80 years	45.063
80-90 years	44.987
90-100 years	44.91
>100 years	44.833

If you take a RDW SD blood test and the results are not in the normal range (39-46 fL), 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 SD Test Is Done :

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

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