What causes high WBC and low RDW?

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

If your WBC is in between 4 thou/uL and 11 thou/uL and your RDW is in between 11.6 % and 14 % then you need not worry as these are the normal ranges for WBC 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 WBC : 4 - 11 thou/uL

Ideal values of WBC depending on age :

Age	Ideal WBC value
<5 years	4.043
5-10 years	4.087
10-15 years	4.131
15-20 years	4.176
20-25 years	4.221
25-30 years	4.267
30-35 years	4.313
35-40 years	4.36
40-45 years	4.407
45-50 years	4.455
50-55 years	4.503
55-60 years	4.552
60-70 years	4.601
70-80 years	4.651
80-90 years	4.701
90-100 years	4.752
>100 years	4.803

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

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

• Infections, most commonly caused by bacteria and some viruses, less commonly by fungi or parasites
• Bone marrow damage
• Overwhelming infections (e.g., sepsis)
• Inflammation or inflammatory conditions such as vasculitis or inflammatory bowel disease
• Myelodysplastic syndrome

If you want your blood test report to be interpreted by WBC specialist, you can upload your report. Our WBC 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	11.725
5-10 years	11.852
10-15 years	11.98
15-20 years	12.109
20-25 years	12.24
25-30 years	12.372
30-35 years	12.506
35-40 years	12.641
40-45 years	12.778
45-50 years	12.916
50-55 years	13.055
55-60 years	13.196
60-70 years	13.339
70-80 years	13.483
80-90 years	13.629
90-100 years	13.776
>100 years	13.925

High WBC and low RDW can be caused by a lot of reasons. If you take WBC and RDW blood tests and the results are higher than 11 thou/uL for WBC 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 WBC and RDW Tests Are Done :

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