What causes high RDW and low Vitamin D?

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

If your RDW is in between 11.6 % and 14 % 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 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 : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	11.897
5-10 years	12.202
10-15 years	12.514
15-20 years	12.834
20-25 years	13.163
25-30 years	13.5
30-35 years	13.846
35-40 years	13.836
40-45 years	13.827
45-50 years	13.818
50-55 years	13.809
55-60 years	13.8
60-70 years	13.791
70-80 years	13.782
80-90 years	13.773
90-100 years	13.764
>100 years	13.755

*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

1,37,160

Total number of patients treated

RDW treatment - Click to read 10 GOLDEN ARTICLES on Anemia

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 Vitamin D : 75 - 250 nmol/L

Ideal values of Vitamin D depending on age :

Age	Ideal Vitamin D value
<5 years	76.92
5-10 years	78.889
10-15 years	80.909
15-20 years	82.98
20-25 years	85.104
25-30 years	87.283
30-35 years	89.517
35-40 years	91.809
40-45 years	94.159
45-50 years	96.569
50-55 years	99.041
55-60 years	101.576
60-70 years	104.176
70-80 years	106.843
80-90 years	109.578
90-100 years	112.383
>100 years	115.26

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

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