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

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

High levels of RDW SD and CRP in the blood indicate a variety of health problems. If your blood RDW SD level is between 39 fL to 46 fL and the CRP level is between 0 fL to 3 mg/L, then your body does not have any underlying health problems. But if RDW SD and CRP 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	39.723
5-10 years	40.459
10-15 years	41.209
15-20 years	41.973
20-25 years	42.751
25-30 years	43.543
30-35 years	44.35
35-40 years	45.172
40-45 years	45.156
45-50 years	45.993
50-55 years	45.977
55-60 years	45.961
60-70 years	45.946
70-80 years	45.93
80-90 years	45.914
90-100 years	45.898
>100 years	45.882

*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 CRP range : 0 - 3 mg/L

Age-wise ideal CRP level in blood:

Age	Ideal CRP value
<5 years	0.11204
5-10 years	0.11412
10-15 years	0.11623
15-20 years	0.11838
20-25 years	0.12057
25-30 years	0.1228
30-35 years	0.12508
35-40 years	0.1274
40-45 years	0.12976
45-50 years	0.13216
50-55 years	0.13461
55-60 years	0.1371
60-70 years	0.13964
70-80 years	0.14223
80-90 years	0.14487
90-100 years	0.14755
>100 years	0.15028

High RDW SD and CRP 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 3 mg/L for CRP, 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 CRP test. In most hospitals RDW SD and CRP 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.