What causes high RDW SD and low Transferrin saturation?

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

If your RDW SD is in between 39 fL and 46 fL and your Transferrin saturation is in between 13 % and 45 % then you need not worry as these are the normal ranges for RDW SD 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 SD : 39 - 46 fL

Ideal values of RDW SD depending on age :

Age	Ideal RDW SD value
<5 years	39.691
5-10 years	40.395
10-15 years	41.111
15-20 years	41.84
20-25 years	42.582
25-30 years	43.337
30-35 years	44.105
35-40 years	44.887
40-45 years	45.683
45-50 years	45.669
50-55 years	45.655
55-60 years	45.64
60-70 years	45.625
70-80 years	45.611
80-90 years	45.597
90-100 years	45.582
>100 years	45.568

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

If you want your blood test report to be interpreted by RDW SD specialist, then you can upload your report. Our RDW SD 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 SD levels include:

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

If you want your blood test report to be interpreted by RDW SD specialist, you can upload your report. Our RDW SD 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	13.23
5-10 years	13.465
10-15 years	13.704
15-20 years	13.947
20-25 years	14.194
25-30 years	14.446
30-35 years	14.702
35-40 years	14.963
40-45 years	15.228
45-50 years	15.498
50-55 years	15.773
55-60 years	16.053
60-70 years	16.338
70-80 years	16.628
80-90 years	16.923
90-100 years	17.223
>100 years	17.528

High RDW SD and low Transferrin saturation can be caused by a lot of reasons. If you take RDW SD and Transferrin saturation blood tests and the results are higher than 46 fL for RDW SD 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 SD and Transferrin saturation Tests Are Done :

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