What causes high RBC and low HbA1c?

High RBC and low HbA1c can be caused by many reasons.

If your RBC is in between 4.5 mil/uL and 5.5 mil/uL and your HbA1c is in between 4 % and 5.7 % then you need not worry as these are the normal ranges for RBC and HbA1c 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 RBC levels include:

• Sudden (acute) or chronic bleeding from the digestive tract
• Kidney failure—severe and chronic kidney diseases lead to decreased production of erythropoietin
• Bone marrow damage
• Conditions that cause red blood cells to be destroyed, such as hemolytic anemia caused by autoimmunity or defects in the red cell itself
• Chronic bleeding from the digestive tract

RBC treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Normal range of RBC : 4.5 - 5.5 mil/uL

Ideal values of RBC depending on age :

Age	Ideal RBC value
<5 years	4.712
5-10 years	4.933
10-15 years	5.165
15-20 years	5.408
20-25 years	5.396
25-30 years	5.384
30-35 years	5.372
35-40 years	5.36
40-45 years	5.348
45-50 years	5.336
50-55 years	5.324
55-60 years	5.312
60-70 years	5.301
70-80 years	5.289
80-90 years	5.278
90-100 years	5.266
>100 years	5.255

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

Normal range of HbA1c : 4 - 5.7 %

Ideal values of HbA1c depending on age :

Age	Ideal HbA1c value
<5 years	4.188
5-10 years	4.385
10-15 years	4.591
15-20 years	4.807
20-25 years	5.033
25-30 years	5.27
30-35 years	5.518
35-40 years	5.505
40-45 years	5.493
45-50 years	5.481
50-55 years	5.469
55-60 years	5.457
60-70 years	5.444
70-80 years	5.7
80-90 years	5.688
90-100 years	5.675
>100 years	5.663

High RBC and low HbA1c can be caused by a lot of reasons. If you take RBC and HbA1c blood tests and the results are higher than 5.5 mil/uL for RBC and lower than 4 % for HbA1c, 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 RBC and HbA1c Tests Are Done :

If your doctor wants RBC and HbA1c tests on you, you may need to go through these tests. During the RBC and HbA1c 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 RBC and HbA1c Test reports by your pathologist.

Medical References

• MedlinePlus – Red Blood Cell (RBC) Count
• WebMD – Red Blood Cell (RBC) Count Test: Results and What They Mean
• MedlinePlus – Red Blood Cell (RBC) Indices