What causes high Calcium and low Potassium?

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

If your Calcium is in between 8.5 mg/dL and 10.1 mg/dL and your Potassium is in between 3.5 mmol/L and 5.1 mmol/L then you need not worry as these are the normal ranges for Calcium and Potassium 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	8.624
5-10 years	8.75
10-15 years	8.878
15-20 years	9.008
20-25 years	9.14
25-30 years	9.273
30-35 years	9.408
35-40 years	9.545
40-45 years	9.684
45-50 years	9.825
50-55 years	9.968
55-60 years	9.966
60-70 years	9.964
70-80 years	9.961
80-90 years	9.958
90-100 years	9.955
>100 years	10.1

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

Normal range of Potassium : 3.5 - 5.1 mmol/L

Ideal values of Potassium depending on age :

Age	Ideal Potassium value
<5 years	3.551
5-10 years	3.603
10-15 years	3.656
15-20 years	3.709
20-25 years	3.763
25-30 years	3.818
30-35 years	3.874
35-40 years	3.931
40-45 years	3.988
45-50 years	4.046
50-55 years	4.105
55-60 years	4.165
60-70 years	4.226
70-80 years	4.288
80-90 years	4.351
90-100 years	4.415
>100 years	4.479

High Calcium and low Potassium can be caused by a lot of reasons. If you take Calcium and Potassium blood tests and the results are higher than 10.1 mg/dL for Calcium and lower than 3.5 mmol/L for Potassium, 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 Potassium Tests Are Done :

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