What causes high Prothrombin time and low Vitamin B12?

High Prothrombin time and low Vitamin B12 can be caused by many reasons.

If your Prothrombin time is in between 12 seconds and 16 seconds and your Vitamin B12 is in between 211 pg/mL and 911 pg/mL then you need not worry as these are the normal ranges for Prothrombin time and Vitamin B12 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 Prothrombin time : 12 - 16 seconds

Ideal values of Prothrombin time depending on age :

Age	Ideal Prothrombin time value
<5 years	12.126
5-10 years	12.254
10-15 years	12.383
15-20 years	12.514
20-25 years	12.646
25-30 years	12.779
30-35 years	12.914
35-40 years	13.05
40-45 years	13.188
45-50 years	13.327
50-55 years	13.467
55-60 years	13.609
60-70 years	13.752
70-80 years	13.897
80-90 years	14.043
90-100 years	14.191
>100 years	14.341

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

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

• Liver disease
• Vitamin K abnormality
• Hemophilia A and hemophilia B
• Decreased or defective factor I (fibrinogen), II (prothrombin), V or X
• Willebrand disease

If you want your blood test report to be interpreted by Prothrombin time specialist, you can upload your report. Our Prothrombin time 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 Vitamin B12 : 211 - 911 pg/mL

Ideal values of Vitamin B12 depending on age :

Age	Ideal Vitamin B12 value
<5 years	213.224
5-10 years	215.471
10-15 years	217.742
15-20 years	220.037
20-25 years	222.356
25-30 years	224.7
30-35 years	227.068
35-40 years	229.461
40-45 years	231.88
45-50 years	234.324
50-55 years	236.794
55-60 years	239.29
60-70 years	241.812
70-80 years	244.361
80-90 years	246.937
90-100 years	249.54
>100 years	252.17

High Prothrombin time and low Vitamin B12 can be caused by a lot of reasons. If you take Prothrombin time and Vitamin B12 blood tests and the results are higher than 16 seconds for Prothrombin time and lower than 211 pg/mL for Vitamin B12, 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 Prothrombin time and Vitamin B12 Tests Are Done :

If your doctor wants Prothrombin time and Vitamin B12 tests on you, you may need to go through these tests. During the Prothrombin time and Vitamin B12 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 Prothrombin time and Vitamin B12 Test reports by your pathologist.