What causes high INR and low Ferritin?

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

If your INR is in between 0.9 ratio and 1.2 ratio and your Ferritin is in between 22 ng/mL and 322 ng/mL then you need not worry as these are the normal ranges for INR and Ferritin 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	0.948
5-10 years	0.998
10-15 years	1.051
15-20 years	1.107
20-25 years	1.166
25-30 years	1.163
30-35 years	1.16
35-40 years	1.157
40-45 years	1.153
45-50 years	1.15
50-55 years	1.147
55-60 years	1.144
60-70 years	1.141
70-80 years	1.138
80-90 years	1.198
90-100 years	1.195
>100 years	1.191

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

Normal range of Ferritin : 22 - 322 ng/mL

Ideal values of Ferritin depending on age :

Age	Ideal Ferritin value
<5 years	23.168
5-10 years	24.398
10-15 years	25.694
15-20 years	27.058
20-25 years	28.495
25-30 years	30.008
30-35 years	31.601
35-40 years	33.279
40-45 years	35.046
45-50 years	36.907
50-55 years	38.867
55-60 years	40.931
60-70 years	43.104
70-80 years	45.393
80-90 years	47.803
90-100 years	50.341
>100 years	53.014

High INR and low Ferritin can be caused by a lot of reasons. If you take INR and Ferritin blood tests and the results are higher than 1.2 ratio for INR and lower than 22 ng/mL for Ferritin, 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 Ferritin Tests Are Done :

If your doctor wants INR and Ferritin tests on you, you may need to go through these tests. During the INR and Ferritin 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 Ferritin 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