What causes high RDW and low Transferrin saturation?

High RDW and low Transferrin saturation can be caused by many reasons.

If your RDW is in between 11.6 % and 14 % and your Transferrin saturation is in between 13 % and 45 % then you need not worry as these are the normal ranges for RDW and Transferrin saturation 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	11.917
5-10 years	12.242
10-15 years	12.576
15-20 years	12.919
20-25 years	13.272
25-30 years	13.634
30-35 years	13.624
35-40 years	13.996
40-45 years	13.985
45-50 years	13.975
50-55 years	13.965
55-60 years	13.954
60-70 years	13.944
70-80 years	13.934
80-90 years	13.923
90-100 years	13.913
>100 years	13.903

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

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

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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

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

Normal range of Transferrin saturation : 13 - 45 %

Ideal values of Transferrin saturation depending on age :

Age	Ideal Transferrin saturation value
<5 years	13.355
5-10 years	13.72
10-15 years	14.095
15-20 years	14.48
20-25 years	14.875
25-30 years	15.281
30-35 years	15.698
35-40 years	16.127
40-45 years	16.567
45-50 years	17.019
50-55 years	17.484
55-60 years	17.961
60-70 years	18.451
70-80 years	18.955
80-90 years	19.472
90-100 years	20.004
>100 years	20.55

High RDW and low Transferrin saturation can be caused by a lot of reasons. If you take RDW and Transferrin saturation blood tests and the results are higher than 14 % for RDW and lower than 13 % for Transferrin saturation, 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 Transferrin saturation Tests Are Done :

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

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