Is RBC 5.64 high, normal or dangerous? What does Red blood cell count level 5.64 mean?

📅 Medical Review Date: September 19, 2025

RBC 5.64

Your RBC level of 5.64 is a High RBC level.

If you are a male and your RBC is in between 4.5 mil/uL and 5.5 mil/uL, or if you are a female and your RBC is in between 5 mil/uL and 6 mil/uL then you need not worry as 4.5-5.5 mil/uL is the normal range for men and 5-6 mil/uL is the normal range for women. But if your RBC is lesser or greater than the above values, then there may be some problem in your body.

Important - Scroll to the end of this article to see how our patients managed their high RBC levels 

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The normal RBC range for men is :4.5 - 5.5 mil/uL

Ideal values of RBC depending on age (male) :
Age Ideal RBC value
<5 years 4.754
5-10 years 5.022
10-15 years 5.305
15-20 years 5.288
20-25 years 5.271
25-30 years 5.254
30-35 years 5.237
35-40 years 5.22
40-45 years 5.203
45-50 years 5.496
50-55 years 5.479
55-60 years 5.462
60-70 years 5.445
70-80 years 5.428
80-90 years 5.411
90-100 years 5.394
>100 years 5.377

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

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1,51,150

Total number of patients treated

Important - Read more questions about high RBC levels after this video message 

A video message on the treatment of your high RBC level

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Important - At the end of this article read how our patients treated their high RBC levels 

Some examples of conditions that increase or decrease RBC levels include:

  • Sudden (acute) or chronic bleeding from the digestive tract
  • Kidney failuresevere 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
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Important - At the end of this article read how our patients treated their high RBC levels 

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Normal range of RBC found among women :5-6 mil/uL

Ideal values of RBC depending on age (female) :
AgeIdeal RBC value
<5 years 5.29
5-10 years 5.597
10-15 years 5.922
15-20 years 5.902
20-25 years 5.882
25-30 years 5.862
30-35 years 5.843
35-40 years 5.823
40-45 years 5.803
45-50 years 5.783
50-55 years 5.764
55-60 years 5.745
60-70 years 5.726
70-80 years 5.707
80-90 years 5.688
90-100 years 5.668
>100 years 5.997
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Can Low or High RBC cause Heart Problems?

Read on to know how abnormal RBC affects heart

Know more

If you take a RBC blood test and the results are not in the normal range (4.5-5.5 mil/uL), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the RBC Test Is Done :

When your doctor orders a RBC test, it involves a straightforward blood draw to measure your RBC levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your RBC test results are usually available within a few hours.

Medical References

RBC treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Symptoms
Dr. Hernandez - Pathologist

Medically Reviewed By

Dr. Hernandez, MD

BOARD CERTIFIED PATHOLOGIST

Laboratory Medicine Specialist

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Laboratory Expertise:

  • Clinical Pathology Certification
  • 15+ years lab analysis experience
  • Specializes in test interpretation
  • Medical Advisory Board Member
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Medical Disclaimer: This information is for educational purposes and should not replace professional medical advice. Consult your physician for diagnosis and treatment. Read full disclaimer.

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