What causes high TIBC and low BUN?

High TIBC and low BUN can be caused by many reasons.

If your TIBC is in between 250 mcg/dL and 450 mcg/dL and your BUN is in between 6 mg/dL and 20 mg/dL then you need not worry as these are the normal ranges for TIBC and BUN 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 TIBC : 250 - 450 mcg/dL

Ideal values of TIBC depending on age :

Age	Ideal TIBC value
<5 years	254.353
5-10 years	258.781
10-15 years	263.286
15-20 years	267.87
20-25 years	272.534
25-30 years	277.279
30-35 years	282.106
35-40 years	287.017
40-45 years	292.014
45-50 years	297.098
50-55 years	302.27
55-60 years	307.533
60-70 years	312.887
70-80 years	318.334
80-90 years	323.876
90-100 years	329.515
>100 years	335.252

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

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

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TIBC treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Some examples of conditions that increase or decrease TIBC levels include:

• Iron deficiency
• Iron poisoning
• Inflammation
• Chronic liver disease
• Hemochromatosis

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

Normal range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.104
5-10 years	6.21
10-15 years	6.318
15-20 years	6.428
20-25 years	6.54
25-30 years	6.654
30-35 years	6.77
35-40 years	6.888
40-45 years	7.008
45-50 years	7.13
50-55 years	7.254
55-60 years	7.38
60-70 years	7.508
70-80 years	7.639
80-90 years	7.772
90-100 years	7.907
>100 years	8.045

High TIBC and low BUN can be caused by a lot of reasons. If you take TIBC and BUN blood tests and the results are higher than 450 mcg/dL for TIBC and lower than 6 mg/dL for BUN, 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 TIBC and BUN Tests Are Done :

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

Medical References

• Cleveland Clinic – TIBC (Total Iron-Binding Capacity) Test
• WebMD – What to Know About Total Iron-Binding Capacity (TIBC) Test
• MedlinePlus – Total iron binding capacity