What causes high RDW SD and low Packed cell volume?

High RDW SD and low Packed cell volume can be caused by many reasons.

If your RDW SD is in between 39 fL and 46 fL and your Packed cell volume is in between 41 % and 49.5 % then you need not worry as these are the normal ranges for RDW SD and Packed cell volume 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	39.687
5-10 years	40.386
10-15 years	41.098
15-20 years	41.822
20-25 years	42.559
25-30 years	43.309
30-35 years	44.072
35-40 years	44.849
40-45 years	45.639
45-50 years	45.625
50-55 years	45.611
55-60 years	45.597
60-70 years	45.582
70-80 years	45.568
80-90 years	45.554
90-100 years	45.54
>100 years	45.525

*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 Packed cell volume : 41 - 49.5 %

Ideal values of Packed cell volume depending on age :

Age	Ideal Packed cell volume value
<5 years	41.722
5-10 years	42.457
10-15 years	43.205
15-20 years	43.966
20-25 years	44.741
25-30 years	45.529
30-35 years	46.331
35-40 years	47.147
40-45 years	47.978
45-50 years	48.823
50-55 years	48.808
55-60 years	48.793
60-70 years	48.778
70-80 years	48.762
80-90 years	48.747
90-100 years	48.732
>100 years	48.717

High RDW SD and low Packed cell volume can be caused by a lot of reasons. If you take RDW SD and Packed cell volume blood tests and the results are higher than 46 fL for RDW SD and lower than 41 % for Packed cell volume, 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 Packed cell volume Tests Are Done :

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