What causes high RDW and low Calcium?

High RDW and low Calcium can be caused by many reasons.

If your RDW is in between 11.6 % and 14 % and your Calcium is in between 8.5 mg/dL and 10.1 mg/dL then you need not worry as these are the normal ranges for RDW and Calcium respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Some examples of conditions that can increase or decrease RDW levels include:

• Crohn's disease
• Chronic liver disease
• Thalassemia, an inherited blood disorder
• An iron or vitamin deficiency
• Heart disease

RDW treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Normal range of RDW : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	11.869
5-10 years	12.144
10-15 years	12.426
15-20 years	12.714
20-25 years	13.009
25-30 years	13.311
30-35 years	13.62
35-40 years	13.936
40-45 years	13.928
45-50 years	13.92
50-55 years	13.913
55-60 years	13.906
60-70 years	13.899
70-80 years	13.891
80-90 years	13.883
90-100 years	13.875
>100 years	13.868

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

Normal range of Calcium : 8.5 - 10.1 mg/dL

Ideal values of Calcium depending on age :

Age	Ideal Calcium value
<5 years	8.697
5-10 years	8.899
10-15 years	9.105
15-20 years	9.316
20-25 years	9.532
25-30 years	9.753
30-35 years	9.979
35-40 years	9.974
40-45 years	9.968
45-50 years	9.962
50-55 years	9.957
55-60 years	9.952
60-70 years	9.947
70-80 years	9.942
80-90 years	9.937
90-100 years	9.932
>100 years	9.926

High RDW and low Calcium can be caused by a lot of reasons. If you take RDW and Calcium blood tests and the results are higher than 14 % for RDW and lower than 8.5 mg/dL for Calcium, 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 Calcium Tests Are Done :

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