What causes high INR and low D Dimer?

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

If your INR is in between 0.9 ratio and 1.2 ratio and your D Dimer is in between 0 ug/mL and 0.51 ug/mL then you need not worry as these are the normal ranges for INR 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 INR : 0.9 - 1.2 ratio

Ideal values of INR depending on age :

Age	Ideal INR value
<5 years	0.95
5-10 years	1.002
10-15 years	1.057
15-20 years	1.115
20-25 years	1.177
25-30 years	1.173
30-35 years	1.17
35-40 years	1.167
40-45 years	1.163
45-50 years	1.159
50-55 years	1.155
55-60 years	1.152
60-70 years	1.149
70-80 years	1.145
80-90 years	1.141
90-100 years	1.138
>100 years	1.135

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

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

• Liver disease
• Vitamin K abnormality
• Decreased or defective factor I (fibrinogen), II (prothrombin), V or X
• Hemophilia A and hemophilia B
• Autoantibody against a specific factor (e.g., factor VIII)

If you want your blood test report to be interpreted by INR specialist, you can upload your report. Our INR 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 - 0.51 ug/mL

Ideal values of D Dimer depending on age :

Age	Ideal D Dimer value
<5 years	0.116
5-10 years	0.122
10-15 years	0.129
15-20 years	0.136
20-25 years	0.144
25-30 years	0.152
30-35 years	0.16
35-40 years	0.169
40-45 years	0.178
45-50 years	0.188
50-55 years	0.198
55-60 years	0.209
60-70 years	0.221
70-80 years	0.233
80-90 years	0.246
90-100 years	0.26
>100 years	0.274

High INR and low D Dimer can be caused by a lot of reasons. If you take INR and D Dimer blood tests and the results are higher than 1.2 ratio for INR and lower than 0 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 INR and D Dimer Tests Are Done :

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