Is RBC 6.35 high, normal or dangerous? What does Red blood cell count level 6.35 mean?

📅 Medical Review Date: December 19, 2025

Your RBC level of 6.35 is a High RBC level.

An RBC level of 6.35 mil/uL usually means the body is producing too many red blood cells or is dehydrated. It suggests oxygen delivery may be affected. High levels of RBC can cause headaches, dizziness, blurred vision, itching, flushing, high blood pressure, and increased risk of blood clots. This can be caused by living at high altitudes, smoking, lung disease, heart disease, or bone marrow disorders. Further tests are often needed to identify the cause and guide appropriate treatment.

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

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	4.786
5-10 years	5.09
10-15 years	5.413
15-20 years	5.391
20-25 years	5.369
25-30 years	5.347
30-35 years	5.326
35-40 years	5.304
40-45 years	5.283
45-50 years	5.261
50-55 years	5.24
55-60 years	5.219
60-70 years	5.198
70-80 years	5.177
80-90 years	5.156
90-100 years	5.483
>100 years	5.461

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

Get Advice via Email : Send us your blood test report, and our RBC experts will review it. You'll receive a detailed analysis and personalized treatment guidance via email within 12 hours. If you have additional blood test results besides RBC, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

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

Also Read :How our patients treated their high rbc?

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

**Ideal values of RBC depending on age (female) :**
Age	Ideal RBC value
<5 years	5.327
5-10 years	5.675
10-15 years	5.651
15-20 years	5.627
20-25 years	5.995
25-30 years	5.969
30-35 years	5.943
35-40 years	5.918
40-45 years	5.893
45-50 years	5.867
50-55 years	5.842
55-60 years	5.817
60-70 years	5.792
70-80 years	5.767
80-90 years	5.742
90-100 years	5.718
>100 years	5.694

Also Read :Symptoms of High RBC

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.

Important :How our patients treated their high rbc?

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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.