What causes high TIBC and low RDW?

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

If your TIBC is in between 250 mcg/dL and 450 mcg/dL and your RDW is in between 11.6 % and 14 % then you need not worry as these are the normal ranges for TIBC and RDW 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	254.27
5-10 years	258.613
10-15 years	263.03
15-20 years	267.523
20-25 years	272.092
25-30 years	276.739
30-35 years	281.466
35-40 years	286.273
40-45 years	291.163
45-50 years	296.136
50-55 years	301.194
55-60 years	306.338
60-70 years	311.57
70-80 years	316.892
80-90 years	322.305
90-100 years	327.81
>100 years	333.409

*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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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 RDW : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	11.798
5-10 years	12
10-15 years	12.205
15-20 years	12.413
20-25 years	12.625
25-30 years	12.841
30-35 years	13.06
35-40 years	13.283
40-45 years	13.51
45-50 years	13.741
50-55 years	13.976
55-60 years	13.972
60-70 years	13.968
70-80 years	13.964
80-90 years	13.96
90-100 years	13.955
>100 years	13.951

High TIBC and low RDW can be caused by a lot of reasons. If you take TIBC and RDW blood tests and the results are higher than 450 mcg/dL for TIBC and lower than 11.6 % for RDW, 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 RDW Tests Are Done :

If your doctor wants TIBC and RDW tests on you, you may need to go through these tests. During the TIBC and RDW 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 RDW 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