What causes high D Dimer and low INR?

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

If your D Dimer is in between 0.1 ug/mL and 0.51 ug/mL and your INR is in between 0.9 ratio and 1.2 ratio then you need not worry as these are the normal ranges for D Dimer and INR 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 D Dimer : 0.1 - 0.51 ug/mL

Ideal values of D Dimer depending on age :

Age	Ideal D Dimer value
<5 years	0.114
5-10 years	0.118
10-15 years	0.122
15-20 years	0.127
20-25 years	0.132
25-30 years	0.137
30-35 years	0.142
35-40 years	0.147
40-45 years	0.152
45-50 years	0.158
50-55 years	0.164
55-60 years	0.17
60-70 years	0.176
70-80 years	0.183
80-90 years	0.19
90-100 years	0.197
>100 years	0.204

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

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

• Smoking
• Obesity
• Clotting disorder such as factor V Leiden mutation
• Antiphospholipid syndrome
• Prolonged immobility

If you want your blood test report to be interpreted by D Dimer specialist, you can upload your report. Our D Dimer 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 INR : 0.9 - 1.2 ratio

Ideal values of INR depending on age :

Age	Ideal INR value
<5 years	0.934
5-10 years	0.969
10-15 years	1.005
15-20 years	1.043
20-25 years	1.082
25-30 years	1.122
30-35 years	1.164
35-40 years	1.163
40-45 years	1.161
45-50 years	1.159
50-55 years	1.157
55-60 years	1.2
60-70 years	1.198
70-80 years	1.197
80-90 years	1.196
90-100 years	1.195
>100 years	1.194

High D Dimer and low INR can be caused by a lot of reasons. If you take D Dimer and INR blood tests and the results are higher than 0.51 ug/mL for D Dimer and lower than 0.9 ratio for INR, 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 D Dimer and INR Tests Are Done :

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

Medical References

• Cleveland Clinic – D-Dimer Test: What It Is, What It Is Used For, Risks & Results
• MedlinePlus – D-Dimer Test
• WebMD – D-Dimer Test: What It Is and How It Works
• NIH – D-Dimer Test