What causes high RDW and low MCHC?

High RDW and low MCHC can be caused by many reasons.

If your RDW is in between 11.6 % and 14 % and your MCHC is in between 31.5 g/dL and 34.5 g/dL then you need not worry as these are the normal ranges for RDW and MCHC 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 : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	11.84
5-10 years	12.085
10-15 years	12.335
15-20 years	12.59
20-25 years	12.851
25-30 years	13.117
30-35 years	13.389
35-40 years	13.666
40-45 years	13.949
45-50 years	13.943
50-55 years	13.937
55-60 years	13.931
60-70 years	13.925
70-80 years	13.919
80-90 years	13.913
90-100 years	13.907
>100 years	13.901

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

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

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

If you want your blood test report to be interpreted by RDW specialist, you can upload your report. Our RDW 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 MCHC : 31.5 - 34.5 g/dL

Ideal values of MCHC depending on age :

Age	Ideal MCHC value
<5 years	32.152
5-10 years	32.818
10-15 years	33.497
15-20 years	34.19
20-25 years	34.176
25-30 years	34.161
30-35 years	34.146
35-40 years	34.132
40-45 years	34.118
45-50 years	34.103
50-55 years	34.088
55-60 years	34.074
60-70 years	34.059
70-80 years	34.044
80-90 years	34.03
90-100 years	34.015
>100 years	34

High RDW and low MCHC can be caused by a lot of reasons. If you take RDW and MCHC blood tests and the results are higher than 14 % for RDW and lower than 31.5 g/dL for MCHC, 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 and MCHC Tests Are Done :

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

Medical References

• Cleveland Clinic – RDW Blood Test: What It Is, Procedure & Results
• MedlinePlus – RDW (Red Cell Distribution Width)
• NIH – High red blood cell distribution width is closely associated with risk of carotid artery atherosclerosis