What causes high RDW and low Prothrombin time?

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

If your RDW is in between 11.6 % and 14 % and your Prothrombin time is in between 12 seconds and 16 seconds then you need not worry as these are the normal ranges for RDW and Prothrombin time 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 RDW : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	11.911
5-10 years	12.23
10-15 years	12.558
15-20 years	12.895
20-25 years	13.241
25-30 years	13.596
30-35 years	13.96
35-40 years	13.95
40-45 years	13.94
45-50 years	13.93
50-55 years	13.92
55-60 years	13.91
60-70 years	13.9
70-80 years	13.89
80-90 years	13.88
90-100 years	13.87
>100 years	13.86

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

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

• Crohn's disease
• Chronic liver disease
• Thalassemia, an inherited blood disorder
• An iron or vitamin deficiency
• Heart disease

If you want your blood test report to be interpreted by RDW specialist, you can upload your report. Our RDW 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 Prothrombin time : 12 - 16 seconds

Ideal values of Prothrombin time depending on age :

Age	Ideal Prothrombin time value
<5 years	12.322
5-10 years	12.652
10-15 years	12.991
15-20 years	13.339
20-25 years	13.696
25-30 years	14.063
30-35 years	14.44
35-40 years	14.827
40-45 years	15.224
45-50 years	15.632
50-55 years	15.621
55-60 years	15.61
60-70 years	15.598
70-80 years	15.587
80-90 years	15.576
90-100 years	15.993
>100 years	15.982

High RDW and low Prothrombin time can be caused by a lot of reasons. If you take RDW and Prothrombin time blood tests and the results are higher than 14 % for RDW and lower than 12 seconds for Prothrombin time, 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 RDW and Prothrombin time Tests Are Done :

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

Medical References

• Cleveland Clinic – RDW Blood Test: What It Is, Procedure & Results
• MedlinePlus – RDW (Red Cell Distribution Width)
• NIH – High red blood cell distribution width is closely associated with risk of carotid artery atherosclerosis