What causes high RDW SD and low MCHC?

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

If your RDW SD is in between 39 fL and 46 fL 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 SD 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 SD : 39 - 46 fL

Ideal values of RDW SD depending on age :

Age	Ideal RDW SD value
<5 years	39.666
5-10 years	40.343
10-15 years	41.032
15-20 years	41.732
20-25 years	42.444
25-30 years	43.169
30-35 years	43.906
35-40 years	44.655
40-45 years	45.417
45-50 years	45.404
50-55 years	45.391
55-60 years	45.378
60-70 years	45.365
70-80 years	45.351
80-90 years	45.338
90-100 years	45.325
>100 years	45.312

*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 MCHC : 31.5 - 34.5 g/dL

Ideal values of MCHC depending on age :

Age	Ideal MCHC value
<5 years	32.038
5-10 years	32.585
10-15 years	33.141
15-20 years	33.707
20-25 years	34.282
25-30 years	34.272
30-35 years	34.262
35-40 years	34.252
40-45 years	34.242
45-50 years	34.233
50-55 years	34.223
55-60 years	34.213
60-70 years	34.203
70-80 years	34.193
80-90 years	34.183
90-100 years	34.174
>100 years	34.164

High RDW SD and low MCHC can be caused by a lot of reasons. If you take RDW SD and MCHC blood tests and the results are higher than 46 fL for RDW SD 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 SD and MCHC Tests Are Done :

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