What causes high Prothrombin time and low BUN?

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

If your Prothrombin time is in between 12 seconds and 16 seconds and your BUN is in between 6 mg/dL and 20 mg/dL then you need not worry as these are the normal ranges for Prothrombin time and BUN 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	12.125
5-10 years	12.251
10-15 years	12.379
15-20 years	12.508
20-25 years	12.638
25-30 years	12.77
30-35 years	12.903
35-40 years	13.037
40-45 years	13.173
45-50 years	13.31
50-55 years	13.449
55-60 years	13.589
60-70 years	13.73
70-80 years	13.873
80-90 years	14.017
90-100 years	14.163
>100 years	14.31

*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 BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.062
5-10 years	6.125
10-15 years	6.189
15-20 years	6.253
20-25 years	6.318
25-30 years	6.384
30-35 years	6.45
35-40 years	6.517
40-45 years	6.585
45-50 years	6.654
50-55 years	6.723
55-60 years	6.793
60-70 years	6.864
70-80 years	6.935
80-90 years	7.007
90-100 years	7.08
>100 years	7.154

High Prothrombin time and low BUN can be caused by a lot of reasons. If you take Prothrombin time and BUN blood tests and the results are higher than 16 seconds for Prothrombin time and lower than 6 mg/dL for BUN, 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 BUN Tests Are Done :

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