What causes high INR and low Potassium?

High INR and low Potassium can be caused by many reasons.

If your INR is in between 0.9 ratio and 1.2 ratio and your Potassium is in between 3.5 mmol/L and 5.1 mmol/L then you need not worry as these are the normal ranges for INR and Potassium respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Some examples of conditions that can 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)

Normal range of INR : 0.9 - 1.2 ratio

Ideal values of INR depending on age :

Age	Ideal INR value
<5 years	0.949
5-10 years	1.001
10-15 years	1.056
15-20 years	1.114
20-25 years	1.175
25-30 years	1.171
30-35 years	1.168
35-40 years	1.165
40-45 years	1.162
45-50 years	1.158
50-55 years	1.154
55-60 years	1.151
60-70 years	1.148
70-80 years	1.145
80-90 years	1.142
90-100 years	1.138
>100 years	1.2

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

Normal range of Potassium : 3.5 - 5.1 mmol/L

Ideal values of Potassium depending on age :

Age	Ideal Potassium value
<5 years	3.691
5-10 years	3.893
10-15 years	4.106
15-20 years	4.33
20-25 years	4.566
25-30 years	4.815
30-35 years	5.078
35-40 years	5.063
40-45 years	5.047
45-50 years	5.032
50-55 years	5.017
55-60 years	5.002
60-70 years	4.987
70-80 years	4.972
80-90 years	4.957
90-100 years	4.943
>100 years	4.928

High INR and low Potassium can be caused by a lot of reasons. If you take INR and Potassium blood tests and the results are higher than 1.2 ratio for INR and lower than 3.5 mmol/L for Potassium, 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 Potassium Tests Are Done :

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

Medical References

• MedlinePlus – Prothrombin Time Test and INR (PT/INR)
• Mayo Clinic – Prothrombin time test
• Cleveland Clinic – Prothrombin Time (PT/INR) Test