What causes high Hemoglobin and low RDW SD?

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

If your Hemoglobin is in between 13 g/dL and 17 g/dL and your RDW SD is in between 39 fL and 46 fL then you need not worry as these are the normal ranges for Hemoglobin and RDW SD respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

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Normal range of Hemoglobin : 13 - 17 g/dL

Ideal values of Hemoglobin depending on age :

Age	Ideal Hemoglobin value
<5 years	13.156
5-10 years	13.314
10-15 years	13.474
15-20 years	13.636
20-25 years	13.8
25-30 years	13.966
30-35 years	14.134
35-40 years	14.304
40-45 years	14.476
45-50 years	14.65
50-55 years	14.826
55-60 years	15.004
60-70 years	15.184
70-80 years	15.366
80-90 years	15.55
90-100 years	15.737
>100 years	15.926

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

Normal range of RDW SD : 39 - 46 fL

Ideal values of RDW SD depending on age :

Age	Ideal RDW SD value
<5 years	39.468
5-10 years	39.942
10-15 years	40.421
15-20 years	40.906
20-25 years	41.397
25-30 years	41.894
30-35 years	42.397
35-40 years	42.906
40-45 years	43.421
45-50 years	43.942
50-55 years	44.469
55-60 years	45.003
60-70 years	45.543
70-80 years	45.537
80-90 years	45.53
90-100 years	45.523
>100 years	45.516

High Hemoglobin and low RDW SD can be caused by a lot of reasons. If you take Hemoglobin and RDW SD blood tests and the results are higher than 17 g/dL for Hemoglobin and lower than 39 fL for RDW SD, 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 Hemoglobin and RDW SD Tests Are Done :

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