What causes high BUN and low Total serum iron?

High BUN and low Total serum iron can be caused by many reasons.

If your BUN is in between 6 mg/dL and 20 mg/dL and your Total serum iron is in between 40 mcg/dL and 190 mcg/dL then you need not worry as these are the normal ranges for BUN and Total serum iron 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	6.064
5-10 years	6.129
10-15 years	6.195
15-20 years	6.261
20-25 years	6.328
25-30 years	6.396
30-35 years	6.465
35-40 years	6.534
40-45 years	6.604
45-50 years	6.675
50-55 years	6.747
55-60 years	6.819
60-70 years	6.892
70-80 years	6.966
80-90 years	7.041
90-100 years	7.116
>100 years	7.192

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

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Normal range of Total serum iron : 40 - 190 mcg/dL

Ideal values of Total serum iron depending on age :

Age	Ideal Total serum iron value
<5 years	40.429
5-10 years	40.862
10-15 years	41.3
15-20 years	41.743
20-25 years	42.19
25-30 years	42.642
30-35 years	43.099
35-40 years	43.561
40-45 years	44.028
45-50 years	44.5
50-55 years	44.977
55-60 years	45.459
60-70 years	45.946
70-80 years	46.439
80-90 years	46.937
90-100 years	47.44
>100 years	47.949

High BUN and low Total serum iron can be caused by a lot of reasons. If you take BUN and Total serum iron blood tests and the results are higher than 20 mg/dL for BUN and lower than 40 mcg/dL for Total serum iron, 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 BUN and Total serum iron Tests Are Done :

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

Medical References

• Mayo Clinic – Blood urea nitrogen (BUN) test
• MedlinePlus – BUN (Blood Urea Nitrogen)
• Cleveland Clinic – Blood Urea Nitrogen (BUN): Testing, Levels & Indication