What causes high Phosphorus and low Alkaline phosphatase?

High Phosphorus and low Alkaline phosphatase can be caused by many reasons.

If your Phosphorus is in between 2.5 mg/dL and 4.5 mg/dL and your Alkaline phosphatase is in between 30 U/L and 120 U/L then you need not worry as these are the normal ranges for Phosphorus and Alkaline phosphatase 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 Phosphorus levels include:

• Increased blood calcium
• Diabetic ketoacidosis (after treatment)
• Liver disease
• Rickets and osteomalacia (due to vitamin D deficiencies)
• Kidney failure

Normal range of Phosphorus : 2.5 - 4.5 mg/dL

Ideal values of Phosphorus depending on age :

Age	Ideal Phosphorus value
<5 years	2.645
5-10 years	2.798
10-15 years	2.96
15-20 years	3.132
20-25 years	3.314
25-30 years	3.506
30-35 years	3.709
35-40 years	3.924
40-45 years	4.152
45-50 years	4.393
50-55 years	4.378
55-60 years	4.363
60-70 years	4.348
70-80 years	4.333
80-90 years	4.318
90-100 years	4.303
>100 years	4.289

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

Normal range of Alkaline phosphatase : 30 - 120 U/L

Ideal values of Alkaline phosphatase depending on age :

Age	Ideal Alkaline phosphatase value
<5 years	31.74
5-10 years	33.581
10-15 years	35.529
15-20 years	37.59
20-25 years	39.77
25-30 years	42.077
30-35 years	44.517
35-40 years	47.099
40-45 years	49.831
45-50 years	52.721
50-55 years	55.779
55-60 years	59.014
60-70 years	62.437
70-80 years	66.058
80-90 years	69.889
90-100 years	73.943
>100 years	78.232

High Phosphorus and low Alkaline phosphatase can be caused by a lot of reasons. If you take Phosphorus and Alkaline phosphatase blood tests and the results are higher than 4.5 mg/dL for Phosphorus and lower than 30 U/L for Alkaline phosphatase, 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 Phosphorus and Alkaline phosphatase Tests Are Done :

If your doctor wants Phosphorus and Alkaline phosphatase tests on you, you may need to go through these tests. During the Phosphorus and Alkaline phosphatase 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 Phosphorus and Alkaline phosphatase Test reports by your pathologist.