What causes high RDW and low Total serum iron?

High RDW and low Total serum iron can be caused by many reasons.

If your RDW is in between 11.6 % and 14 % and your Total serum iron is in between 40 mcg/dL and 190 mcg/dL then you need not worry as these are the normal ranges for RDW and Total serum iron respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Some examples of conditions that can increase or decrease RDW levels include:

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

RDW treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Normal range of RDW : 11.6 - 14 %

Ideal values of RDW depending on age :

Age	Ideal RDW value
<5 years	11.916
5-10 years	12.24
10-15 years	12.573
15-20 years	12.915
20-25 years	13.266
25-30 years	13.627
30-35 years	13.998
35-40 years	13.988
40-45 years	13.977
45-50 years	13.966
50-55 years	13.956
55-60 years	13.946
60-70 years	13.935
70-80 years	13.925
80-90 years	13.915
90-100 years	13.904
>100 years	13.894

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

Normal range of Total serum iron : 40 - 190 mcg/dL

Ideal values of Total serum iron depending on age :

Age	Ideal Total serum iron value
<5 years	41.088
5-10 years	42.206
10-15 years	43.354
15-20 years	44.533
20-25 years	45.744
25-30 years	46.988
30-35 years	48.266
35-40 years	49.579
40-45 years	50.928
45-50 years	52.313
50-55 years	53.736
55-60 years	55.198
60-70 years	56.699
70-80 years	58.241
80-90 years	59.825
90-100 years	61.452
>100 years	63.123

High RDW and low Total serum iron can be caused by a lot of reasons. If you take RDW and Total serum iron blood tests and the results are higher than 14 % for RDW and lower than 40 mcg/dL for Total serum iron, 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 Total serum iron Tests Are Done :

If your doctor wants RDW and Total serum iron tests on you, you may need to go through these tests. During the RDW and Total serum iron 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 Total serum iron 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