What causes high RDW SD and low Vitamin D?

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

If your RDW SD is in between 39 fL and 46 fL and your Vitamin D is in between 75 nmol/L and 250 nmol/L then you need not worry as these are the normal ranges for RDW SD and Vitamin D 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	39.685
5-10 years	40.382
10-15 years	41.091
15-20 years	41.813
20-25 years	42.547
25-30 years	43.294
30-35 years	44.054
35-40 years	44.828
40-45 years	45.615
45-50 years	45.601
50-55 years	45.587
55-60 years	45.573
60-70 years	45.559
70-80 years	45.545
80-90 years	45.531
90-100 years	45.517
>100 years	45.503

*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 Vitamin D : 75 - 250 nmol/L

Ideal values of Vitamin D depending on age :

Age	Ideal Vitamin D value
<5 years	76.317
5-10 years	77.657
10-15 years	79.021
15-20 years	80.409
20-25 years	81.821
25-30 years	83.258
30-35 years	84.72
35-40 years	86.208
40-45 years	87.722
45-50 years	89.262
50-55 years	90.829
55-60 years	92.424
60-70 years	94.047
70-80 years	95.698
80-90 years	97.378
90-100 years	99.088
>100 years	100.828

High RDW SD and low Vitamin D can be caused by a lot of reasons. If you take RDW SD and Vitamin D blood tests and the results are higher than 46 fL for RDW SD and lower than 75 nmol/L for Vitamin D, 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 Vitamin D Tests Are Done :

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