What causes high INR and low Cystatin c?

High INR and low Cystatin c can be caused by many reasons.

If your INR is in between 0.9 ratio and 1.2 ratio and your Cystatin c is in between 0.62 mg/L and 1.03 mg/L then you need not worry as these are the normal ranges for INR and Cystatin c 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	1.003
10-15 years	1.059
15-20 years	1.118
20-25 years	1.18
25-30 years	1.176
30-35 years	1.173
35-40 years	1.17
40-45 years	1.166
45-50 years	1.162
50-55 years	1.158
55-60 years	1.155
60-70 years	1.152
70-80 years	1.148
80-90 years	1.144
90-100 years	1.14
>100 years	1.137

*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 Cystatin c : 0.62 - 1.03 mg/L

Ideal values of Cystatin c depending on age :

Age	Ideal Cystatin c value
<5 years	0.655
5-10 years	0.692
10-15 years	0.731
15-20 years	0.772
20-25 years	0.815
25-30 years	0.861
30-35 years	0.909
35-40 years	0.96
40-45 years	1.014
45-50 years	1.011
50-55 years	1.008
55-60 years	1.005
60-70 years	1.002
70-80 years	0.999
80-90 years	0.996
90-100 years	0.993
>100 years	0.99

High INR and low Cystatin c can be caused by a lot of reasons. If you take INR and Cystatin c blood tests and the results are higher than 1.2 ratio for INR and lower than 0.62 mg/L for Cystatin c, 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 Cystatin c Tests Are Done :

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