What causes high RDW and low Hematocrit?

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

If your RDW is in between 11.6 % and 14 % and your Hematocrit is in between 40 % and 50 % then you need not worry as these are the normal ranges for RDW and Hematocrit 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	11.837
5-10 years	12.078
10-15 years	12.324
15-20 years	12.575
20-25 years	12.832
25-30 years	13.094
30-35 years	13.361
35-40 years	13.634
40-45 years	13.912
45-50 years	13.906
50-55 years	13.901
55-60 years	13.896
60-70 years	13.89
70-80 years	13.884
80-90 years	13.878
90-100 years	13.872
>100 years	13.866

*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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RDW treatment - Click to read 10 GOLDEN ARTICLES on Anemia

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 Hematocrit : 40 - 50 %

Ideal values of Hematocrit depending on age :

Age	Ideal Hematocrit value
<5 years	40.816
5-10 years	41.649
10-15 years	42.499
15-20 years	43.366
20-25 years	44.251
25-30 years	45.154
30-35 years	46.075
35-40 years	47.015
40-45 years	47.974
45-50 years	48.953
50-55 years	49.952
55-60 years	49.931
60-70 years	49.911
70-80 years	49.89
80-90 years	49.869
90-100 years	49.848
>100 years	49.827

High RDW and low Hematocrit can be caused by a lot of reasons. If you take RDW and Hematocrit blood tests and the results are higher than 14 % for RDW and lower than 40 % for Hematocrit, 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 Hematocrit Tests Are Done :

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