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

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

High levels of RDW SD and MCH in the blood indicate a variety of health problems. If your blood RDW SD level is between 39 fL to 46 fL and the MCH level is between 27 fL to 32 pg, then your body does not have any underlying health problems. But if RDW SD and MCH 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	39.704
5-10 years	40.421
10-15 years	41.151
15-20 years	41.894
20-25 years	42.651
25-30 years	43.421
30-35 years	44.205
35-40 years	45.003
40-45 years	45.816
45-50 years	45.801
50-55 years	45.786
55-60 years	45.771
60-70 years	45.756
70-80 years	45.741
80-90 years	45.726
90-100 years	45.711
>100 years	45.697

*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 MCH range : 27 - 32 pg

Age-wise ideal MCH level in blood:

Age	Ideal MCH value
<5 years	27.488
5-10 years	27.984
10-15 years	28.489
15-20 years	29.004
20-25 years	29.528
25-30 years	30.061
30-35 years	30.604
35-40 years	31.157
40-45 years	31.72
45-50 years	31.71
50-55 years	31.7
55-60 years	31.69
60-70 years	31.679
70-80 years	31.669
80-90 years	31.659
90-100 years	31.649
>100 years	31.639

High RDW SD and MCH 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 32 pg for MCH, 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 MCH test. In most hospitals RDW SD and MCH 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.