What causes high RDW and low Bilirubin total?

High RDW and low Bilirubin total can be caused by many reasons.

If your RDW is in between 11.6 % and 14 % and your Bilirubin total is in between 0.2 mg/dL and 1 mg/dL then you need not worry as these are the normal ranges for RDW and Bilirubin total 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 RDW : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	11.854
5-10 years	12.114
10-15 years	12.379
15-20 years	12.65
20-25 years	12.927
25-30 years	13.21
30-35 years	13.499
35-40 years	13.795
40-45 years	13.788
45-50 years	13.781
50-55 years	13.775
55-60 years	13.769
60-70 years	13.763
70-80 years	13.756
80-90 years	13.749
90-100 years	13.742
>100 years	13.735

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

If you want your blood test report to be interpreted by RDW specialist, then you can upload your report. Our RDW 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 RDW levels include:

• Crohn's disease
• Chronic liver disease
• Thalassemia, an inherited blood disorder
• An iron or vitamin deficiency
• Heart disease

If you want your blood test report to be interpreted by RDW specialist, you can upload your report. Our RDW 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 Bilirubin total : 0.2 - 1 mg/dL

Ideal values of Bilirubin total depending on age :

Age	Ideal Bilirubin total value
<5 years	0.204
5-10 years	0.208
10-15 years	0.213
15-20 years	0.218
20-25 years	0.223
25-30 years	0.228
30-35 years	0.233
35-40 years	0.238
40-45 years	0.243
45-50 years	0.248
50-55 years	0.253
55-60 years	0.259
60-70 years	0.265
70-80 years	0.271
80-90 years	0.277
90-100 years	0.283
>100 years	0.289

High RDW and low Bilirubin total can be caused by a lot of reasons. If you take RDW and Bilirubin total blood tests and the results are higher than 14 % for RDW and lower than 0.2 mg/dL for Bilirubin total, 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 RDW and Bilirubin total Tests Are Done :

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

Medical References

• Cleveland Clinic – RDW Blood Test: What It Is, Procedure & Results
• MedlinePlus – RDW (Red Cell Distribution Width)
• NIH – High red blood cell distribution width is closely associated with risk of carotid artery atherosclerosis