What causes high Calcium and low RDW SD?

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

If your Calcium is in between 8.5 mg/dL and 10.1 mg/dL and your RDW SD is in between 39 fL and 46 fL then you need not worry as these are the normal ranges for Calcium and RDW SD 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 Calcium levels include:

• Overactive parathyroid glands
• Some Medications like thiazide diuretics
• Kidney failure.
• Lung diseases
• Taking too much of vitamin D supplements

Normal range of Calcium : 8.5 - 10.1 mg/dL

Ideal values of Calcium depending on age :

Age	Ideal Calcium value
<5 years	8.645
5-10 years	8.792
10-15 years	8.941
15-20 years	9.093
20-25 years	9.248
25-30 years	9.405
30-35 years	9.565
35-40 years	9.728
40-45 years	9.893
45-50 years	10.061
50-55 years	10.058
55-60 years	10.055
60-70 years	10.052
70-80 years	10.049
80-90 years	10.046
90-100 years	10.043
>100 years	10.04

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

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

High Calcium and low RDW SD can be caused by a lot of reasons. If you take Calcium and RDW SD blood tests and the results are higher than 10.1 mg/dL for Calcium and lower than 39 fL for RDW SD, 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 Calcium and RDW SD Tests Are Done :

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

Medical References

• Cleveland Clinic – Calcium Blood Test: What It Is & Results
• MedlinePlus – Calcium Blood Test
• Mayo Clinic – Coronary calcium scan