What causes high BUN and low Alkaline phosphatase?

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

If your BUN is in between 6 mg/dL and 20 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 BUN 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.

Normal range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.062
5-10 years	6.124
10-15 years	6.187
15-20 years	6.251
20-25 years	6.315
25-30 years	6.38
30-35 years	6.446
35-40 years	6.512
40-45 years	6.579
45-50 years	6.647
50-55 years	6.715
55-60 years	6.784
60-70 years	6.854
70-80 years	6.924
80-90 years	6.995
90-100 years	7.067
>100 years	7.14

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

If you want your blood test report to be interpreted by BUN specialist, then you can upload your report. Our BUN expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

1,37,160

Total number of patients treated

BUN treatment - Click to read 10 GOLDEN ARTICLES on Kidney health

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

Ideal values of Alkaline phosphatase depending on age :

Age	Ideal Alkaline phosphatase value
<5 years	30.308
5-10 years	30.62
10-15 years	30.935
15-20 years	31.253
20-25 years	31.574
25-30 years	31.899
30-35 years	32.227
35-40 years	32.558
40-45 years	32.893
45-50 years	33.231
50-55 years	33.573
55-60 years	33.918
60-70 years	34.267
70-80 years	34.619
80-90 years	34.975
90-100 years	35.335
>100 years	35.698

High BUN and low Alkaline phosphatase can be caused by a lot of reasons. If you take BUN and Alkaline phosphatase blood tests and the results are higher than 20 mg/dL for BUN 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.

This page has got the maximum number of views from the below mentioned cities (traffic in last 30 days):

How the BUN and Alkaline phosphatase Tests Are Done :

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