What causes high RDW and low D Dimer?

High RDW and low D Dimer can be caused by many reasons.

If your RDW is in between 11.6 % and 14 % and your D Dimer is in between 0.1 ug/mL and 0.51 ug/mL then you need not worry as these are the normal ranges for RDW and D Dimer 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	11.892
5-10 years	12.192
10-15 years	12.499
15-20 years	12.814
20-25 years	13.137
25-30 years	13.468
30-35 years	13.807
35-40 years	13.798
40-45 years	13.79
45-50 years	13.782
50-55 years	13.773
55-60 years	13.764
60-70 years	13.755
70-80 years	13.747
80-90 years	13.738
90-100 years	13.729
>100 years	13.72

*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 D Dimer : 0.1 - 0.51 ug/mL

Ideal values of D Dimer depending on age :

Age	Ideal D Dimer value
<5 years	0.113
5-10 years	0.116
10-15 years	0.119
15-20 years	0.122
20-25 years	0.125
25-30 years	0.128
30-35 years	0.131
35-40 years	0.134
40-45 years	0.137
45-50 years	0.14
50-55 years	0.144
55-60 years	0.148
60-70 years	0.152
70-80 years	0.156
80-90 years	0.16
90-100 years	0.164
>100 years	0.168

High RDW and low D Dimer can be caused by a lot of reasons. If you take RDW and D Dimer blood tests and the results are higher than 14 % for RDW and lower than 0.1 ug/mL for D Dimer, 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 D Dimer Tests Are Done :

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