What does high RDW SD and RDW CV mean in blood test?

High RDW SD and RDW CV can be caused by numerous problems.

High levels of RDW SD and RDW CV in the blood indicate a variety of health problems. If your blood RDW SD level is between 39 fL to 46 fL and the RDW CV level is between 11.6 fL to 14 %, then your body does not have any underlying health problems. But if RDW SD and RDW CV levels exceed these levels, you should see a doctor immediately.

Normal RDW SD range : 39 - 46 fL

Age-wise ideal RDW SD level in blood:

Age	Ideal RDW SD value
<5 years	39.729
5-10 years	40.472
10-15 years	41.228
15-20 years	41.999
20-25 years	42.784
25-30 years	43.584
30-35 years	44.399
35-40 years	45.229
40-45 years	45.213
45-50 years	45.197
50-55 years	45.181
55-60 years	45.165
60-70 years	45.149
70-80 years	45.993
80-90 years	45.977
90-100 years	45.961
>100 years	45.945

*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 RDW CV range : 11.6 - 14 %

Age-wise ideal RDW CV level in blood:

Age	Ideal RDW CV value
<5 years	11.817
5-10 years	12.038
10-15 years	12.263
15-20 years	12.492
20-25 years	12.725
25-30 years	12.963
30-35 years	13.205
35-40 years	13.452
40-45 years	13.703
45-50 years	13.959
50-55 years	13.954
55-60 years	13.949
60-70 years	13.944
70-80 years	13.94
80-90 years	13.936
90-100 years	13.931
>100 years	13.926

High RDW SD and RDW CV levels in the blood can cause a number of health problems. Your GP may recommend follow-up tests to get an important picture of your overall health and well-being. If the results are greater than 46 fL for RDW SD and more than 14 % for RDW CV, you may also need some follow-up tests that will help detect the underlying disease early.

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How is a blood test performed in the lab?

Depending on the symptoms you are experiencing, your doctor may order a RDW SD and RDW CV test. In most hospitals RDW SD and RDW CV results can be obtained within three to six hours after blood is taken. The blood is usually drawn from a vein on the inside of the elbow or the back of the hand. Drink plenty of water before your appointment. If you experience any symptoms that you are concerned about are out of the ordinary, call your doctor immediately.