What causes high RDW SD and low HbA1c?

High RDW SD and low HbA1c can be caused by many reasons.

If your RDW SD is in between 39 fL and 46 fL and your HbA1c is in between 4 % and 5.7 % then you need not worry as these are the normal ranges for RDW SD and HbA1c 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	39.67
5-10 years	40.351
10-15 years	41.044
15-20 years	41.749
20-25 years	42.466
25-30 years	43.195
30-35 years	43.937
35-40 years	44.691
40-45 years	45.458
45-50 years	45.445
50-55 years	45.431
55-60 years	45.418
60-70 years	45.405
70-80 years	45.392
80-90 years	45.378
90-100 years	45.364
>100 years	45.351

*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 HbA1c : 4 - 5.7 %

Ideal values of HbA1c depending on age :

Age	Ideal HbA1c value
<5 years	4.069
5-10 years	4.139
10-15 years	4.21
15-20 years	4.282
20-25 years	4.356
25-30 years	4.431
30-35 years	4.507
35-40 years	4.584
40-45 years	4.663
45-50 years	4.743
50-55 years	4.824
55-60 years	4.907
60-70 years	4.991
70-80 years	5.077
80-90 years	5.164
90-100 years	5.253
>100 years	5.343

High RDW SD and low HbA1c can be caused by a lot of reasons. If you take RDW SD and HbA1c blood tests and the results are higher than 46 fL for RDW SD and lower than 4 % for HbA1c, 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 HbA1c Tests Are Done :

If your doctor wants RDW SD and HbA1c tests on you, you may need to go through these tests. During the RDW SD and HbA1c 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 HbA1c Test reports by your pathologist.