What causes high Vitamin D and low RDW?

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

If your Vitamin D is in between 75 nmol/L and 250 nmol/L and your RDW is in between 11.6 % and 14 % then you need not worry as these are the normal ranges for Vitamin D and RDW 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 Vitamin D : 75 - 250 nmol/L

Ideal values of Vitamin D depending on age :

Age	Ideal Vitamin D value
<5 years	76.281
5-10 years	77.584
10-15 years	78.909
15-20 years	80.257
20-25 years	81.628
25-30 years	83.022
30-35 years	84.44
35-40 years	85.882
40-45 years	87.349
45-50 years	88.841
50-55 years	90.358
55-60 years	91.901
60-70 years	93.471
70-80 years	95.067
80-90 years	96.691
90-100 years	98.342
>100 years	100.022

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

If you want your blood test report to be interpreted by Vitamin D specialist, then you can upload your report. Our Vitamin D 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

Some examples of conditions that increase or decrease Vitamin D levels include:

• Liver disease
• Celiac disease
• Your body isn’t properly absorbing or using vitamin D.
• Crohn's disease
• Kidney disease

If you want your blood test report to be interpreted by Vitamin D specialist, you can upload your report. Our Vitamin D 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 RDW : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	11.798
5-10 years	12
10-15 years	12.205
15-20 years	12.413
20-25 years	12.625
25-30 years	12.841
30-35 years	13.06
35-40 years	13.283
40-45 years	13.51
45-50 years	13.741
50-55 years	13.976
55-60 years	13.972
60-70 years	13.968
70-80 years	13.964
80-90 years	13.96
90-100 years	13.955
>100 years	13.951

High Vitamin D and low RDW can be caused by a lot of reasons. If you take Vitamin D and RDW blood tests and the results are higher than 250 nmol/L for Vitamin D and lower than 11.6 % for RDW, 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 Vitamin D and RDW Tests Are Done :

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

Medical References

• MedlinePlus – Vitamin D Test
• MedlinePlus – 25-hydroxy vitamin D test
• Mayo Clinic – 2425D - Overview: 25-Hydroxyvitamin D:24,25-Dihydroxyvitamin D Ratio, Serum