What causes high RDW SD and low Bilirubin total?

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

If your RDW SD is in between 39 fL and 46 fL 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 SD 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 SD : 39 - 46 fL

Ideal values of RDW SD depending on age :

Age	Ideal RDW SD value
<5 years	39.67
5-10 years	40.352
10-15 years	41.046
15-20 years	41.752
20-25 years	42.47
25-30 years	43.2
30-35 years	43.943
35-40 years	44.698
40-45 years	45.466
45-50 years	45.453
50-55 years	45.439
55-60 years	45.425
60-70 years	45.412
70-80 years	45.399
80-90 years	45.385
90-100 years	45.371
>100 years	45.358

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

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

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

If you want your blood test report to be interpreted by RDW SD specialist, you can upload your report. Our RDW SD 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	0.203
5-10 years	0.206
10-15 years	0.21
15-20 years	0.214
20-25 years	0.218
25-30 years	0.222
30-35 years	0.226
35-40 years	0.23
40-45 years	0.234
45-50 years	0.238
50-55 years	0.242
55-60 years	0.246
60-70 years	0.25
70-80 years	0.254
80-90 years	0.258
90-100 years	0.262
>100 years	0.267

High RDW SD and low Bilirubin total can be caused by a lot of reasons. If you take RDW SD and Bilirubin total blood tests and the results are higher than 46 fL for RDW SD 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 SD and Bilirubin total Tests Are Done :

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