What does high BUN and Alkaline phosphatase mean in blood test?

High BUN and Alkaline phosphatase can be caused by numerous problems.

High levels of BUN and Alkaline phosphatase in the blood indicate a variety of health problems. If your blood BUN level is between 6 mg/dL to 20 mg/dL and the Alkaline phosphatase level is between 30 mg/dL to 120 U/L, then your body does not have any underlying health problems. But if BUN and Alkaline phosphatase levels exceed these levels, you should see a doctor immediately.

Normal BUN range : 6 - 20 mg/dL

Age-wise ideal BUN level in blood:

Age	Ideal BUN value
<5 years	6.08
5-10 years	6.161
10-15 years	6.243
15-20 years	6.326
20-25 years	6.41
25-30 years	6.495
30-35 years	6.581
35-40 years	6.668
40-45 years	6.757
45-50 years	6.847
50-55 years	6.938
55-60 years	7.03
60-70 years	7.123
70-80 years	7.218
80-90 years	7.314
90-100 years	7.411
>100 years	7.509

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

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Normal Alkaline phosphatase range : 30 - 120 U/L

Age-wise ideal Alkaline phosphatase level in blood:

Age	Ideal Alkaline phosphatase value
<5 years	30.398
5-10 years	30.802
10-15 years	31.211
15-20 years	31.625
20-25 years	32.045
25-30 years	32.471
30-35 years	32.902
35-40 years	33.339
40-45 years	33.782
45-50 years	34.231
50-55 years	34.686
55-60 years	35.147
60-70 years	35.614
70-80 years	36.087
80-90 years	36.566
90-100 years	37.052
>100 years	37.544

High BUN and Alkaline phosphatase levels in the blood can cause a number of health problems. Your GP may recommend follow-up tests to get an important picture of your overall health and well-being. If the results are greater than 20 mg/dL for BUN and more than 120 U/L for Alkaline phosphatase, you may also need some follow-up tests that will help detect the underlying disease early.

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How is a blood test performed in the lab?

Depending on the symptoms you are experiencing, your doctor may order a BUN and Alkaline phosphatase test. In most hospitals BUN and Alkaline phosphatase results can be obtained within three to six hours after blood is taken. The blood is usually drawn from a vein on the inside of the elbow or the back of the hand. Drink plenty of water before your appointment. If you experience any symptoms that you are concerned about are out of the ordinary, call your doctor immediately.