What causes high Prothrombin time and low Cystatin c?

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

If your Prothrombin time is in between 12 seconds and 16 seconds 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 Prothrombin time 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 Prothrombin time : 12 - 16 seconds

Ideal values of Prothrombin time depending on age :

Age	Ideal Prothrombin time value
<5 years	12.127
5-10 years	12.255
10-15 years	12.385
15-20 years	12.516
20-25 years	12.649
25-30 years	12.783
30-35 years	12.918
35-40 years	13.055
40-45 years	13.193
45-50 years	13.333
50-55 years	13.474
55-60 years	13.617
60-70 years	13.761
70-80 years	13.907
80-90 years	14.054
90-100 years	14.203
>100 years	14.353

*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 Cystatin c : 0.62 - 1.03 mg/L

Ideal values of Cystatin c depending on age :

Age	Ideal Cystatin c value
<5 years	0.627
5-10 years	0.634
10-15 years	0.641
15-20 years	0.648
20-25 years	0.655
25-30 years	0.662
30-35 years	0.669
35-40 years	0.676
40-45 years	0.683
45-50 years	0.69
50-55 years	0.697
55-60 years	0.704
60-70 years	0.711
70-80 years	0.719
80-90 years	0.727
90-100 years	0.735
>100 years	0.743

High Prothrombin time and low Cystatin c can be caused by a lot of reasons. If you take Prothrombin time and Cystatin c blood tests and the results are higher than 16 seconds for Prothrombin time 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 Prothrombin time and Cystatin c Tests Are Done :

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