What causes high Calcium and low Phosphate?

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

If your Calcium is in between 8.5 mg/dL and 10.1 mg/dL and your Phosphate is in between 2.4 mg/dL and 4.5 mg/dL then you need not worry as these are the normal ranges for Calcium and Phosphate 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	8.639
5-10 years	8.781
10-15 years	8.925
15-20 years	9.071
20-25 years	9.22
25-30 years	9.371
30-35 years	9.525
35-40 years	9.681
40-45 years	9.84
45-50 years	10.001
50-55 years	9.998
55-60 years	9.995
60-70 years	9.992
70-80 years	9.989
80-90 years	9.986
90-100 years	9.984
>100 years	9.982

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

Normal range of Phosphate : 2.4 - 4.5 mg/dL

Ideal values of Phosphate depending on age :

Age	Ideal Phosphate value
<5 years	2.439
5-10 years	2.479
10-15 years	2.52
15-20 years	2.561
20-25 years	2.603
25-30 years	2.646
30-35 years	2.689
35-40 years	2.733
40-45 years	2.778
45-50 years	2.824
50-55 years	2.87
55-60 years	2.917
60-70 years	2.965
70-80 years	3.014
80-90 years	3.063
90-100 years	3.113
>100 years	3.164

High Calcium and low Phosphate can be caused by a lot of reasons. If you take Calcium and Phosphate blood tests and the results are higher than 10.1 mg/dL for Calcium and lower than 2.4 mg/dL for Phosphate, 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 Phosphate Tests Are Done :

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