What causes high RDW SD and low Hemoglobin?

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

If your RDW SD is in between 39 fL and 46 fL and your Hemoglobin is in between 13 g/dL and 17 g/dL then you need not worry as these are the normal ranges for RDW SD and Hemoglobin 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	39.663
5-10 years	40.337
10-15 years	41.023
15-20 years	41.72
20-25 years	42.429
25-30 years	43.15
30-35 years	43.884
35-40 years	44.63
40-45 years	45.389
45-50 years	45.376
50-55 years	45.363
55-60 years	45.35
60-70 years	45.337
70-80 years	45.324
80-90 years	45.311
90-100 years	45.298
>100 years	45.285

*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 Hemoglobin : 13 - 17 g/dL

Ideal values of Hemoglobin depending on age :

Age	Ideal Hemoglobin value
<5 years	13.221
5-10 years	13.446
10-15 years	13.675
15-20 years	13.907
20-25 years	14.143
25-30 years	14.383
30-35 years	14.628
35-40 years	14.877
40-45 years	15.13
45-50 years	15.387
50-55 years	15.649
55-60 years	15.915
60-70 years	16.186
70-80 years	16.461
80-90 years	16.741
90-100 years	16.737
>100 years	16.733

High RDW SD and low Hemoglobin can be caused by a lot of reasons. If you take RDW SD and Hemoglobin blood tests and the results are higher than 46 fL for RDW SD and lower than 13 g/dL for Hemoglobin, 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 Hemoglobin Tests Are Done :

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