What does high BUN and Phosphorus mean in blood test?

High BUN and Phosphorus can be caused by numerous problems.

High levels of BUN and Phosphorus 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 Phosphorus level is between 2.5 mg/dL to 4.5 mg/dL, then your body does not have any underlying health problems. But if BUN and Phosphorus 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	6.081
5-10 years	6.163
10-15 years	6.246
15-20 years	6.33
20-25 years	6.415
25-30 years	6.501
30-35 years	6.589
35-40 years	6.678
40-45 years	6.768
45-50 years	6.859
50-55 years	6.951
55-60 years	7.045
60-70 years	7.14
70-80 years	7.236
80-90 years	7.334
90-100 years	7.433
>100 years	7.533

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

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Normal Phosphorus range : 2.5 - 4.5 mg/dL

Age-wise ideal Phosphorus level in blood:

Age	Ideal Phosphorus value
<5 years	2.534
5-10 years	2.568
10-15 years	2.603
15-20 years	2.638
20-25 years	2.674
25-30 years	2.71
30-35 years	2.747
35-40 years	2.784
40-45 years	2.822
45-50 years	2.86
50-55 years	2.899
55-60 years	2.938
60-70 years	2.978
70-80 years	3.018
80-90 years	3.059
90-100 years	3.1
>100 years	3.142

High BUN and Phosphorus 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 4.5 mg/dL for Phosphorus, 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 Phosphorus test. In most hospitals BUN and Phosphorus 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.