What causes high RDW SD and low PCV?

High RDW SD and low PCV can be caused by many reasons.

If your RDW SD is in between 39 fL and 46 fL and your PCV is in between 39 % and 51 % then you need not worry as these are the normal ranges for RDW SD and PCV 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 SD : 39 - 46 fL

Ideal values of RDW SD depending on age :

Age	Ideal RDW SD value
<5 years	39.685
5-10 years	40.382
10-15 years	41.092
15-20 years	41.814
20-25 years	42.549
25-30 years	43.297
30-35 years	44.058
35-40 years	44.832
40-45 years	45.62
45-50 years	45.606
50-55 years	45.592
55-60 years	45.578
60-70 years	45.564
70-80 years	45.55
80-90 years	45.536
90-100 years	45.522
>100 years	45.508

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

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

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

If you want your blood test report to be interpreted by RDW SD specialist, you can upload your report. Our RDW SD 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 PCV : 39 - 51 %

Ideal values of PCV depending on age :

Age	Ideal PCV value
<5 years	39.685
5-10 years	40.382
10-15 years	41.092
15-20 years	41.814
20-25 years	42.549
25-30 years	43.297
30-35 years	44.058
35-40 years	44.832
40-45 years	45.62
45-50 years	46.422
50-55 years	47.238
55-60 years	48.068
60-70 years	48.913
70-80 years	49.772
80-90 years	50.646
90-100 years	50.631
>100 years	50.616

High RDW SD and low PCV can be caused by a lot of reasons. If you take RDW SD and PCV blood tests and the results are higher than 46 fL for RDW SD and lower than 39 % for PCV, 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 SD and PCV Tests Are Done :

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