What causes high Vitamin B12 and low RBC?

High Vitamin B12 and low RBC can be caused by many reasons.

If your Vitamin B12 is in between 211 pg/mL and 911 pg/mL and your RBC is in between 4.5 mil/uL and 5.5 mil/uL then you need not worry as these are the normal ranges for Vitamin B12 and RBC respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Normal range of Vitamin B12 : 211 - 911 pg/mL

Ideal values of Vitamin B12 depending on age :

Age	Ideal Vitamin B12 value
<5 years	214.589
5-10 years	218.239
10-15 years	221.951
15-20 years	225.726
20-25 years	229.566
25-30 years	233.471
30-35 years	237.442
35-40 years	241.481
40-45 years	245.589
45-50 years	249.766
50-55 years	254.015
55-60 years	258.336
60-70 years	262.73
70-80 years	267.199
80-90 years	271.744
90-100 years	276.366
>100 years	281.067

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

If you want your blood test report to be interpreted by Vitamin B12 specialist, then you can upload your report. Our Vitamin B12 expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

1,37,160

Total number of patients treated

Some examples of conditions that increase or decrease Vitamin B12 levels include:

• Crohn disease
• Ulcerative colitis
• Celiac disease
• Reduced stomach acid production
• Pancreatic insufficiency

If you want your blood test report to be interpreted by Vitamin B12 specialist, you can upload your report. Our Vitamin B12 expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

Normal range of RBC : 4.5 - 5.5 mil/uL

Ideal values of RBC depending on age :

Age	Ideal RBC value
<5 years	4.577
5-10 years	4.655
10-15 years	4.734
15-20 years	4.815
20-25 years	4.897
25-30 years	4.98
30-35 years	5.065
35-40 years	5.151
40-45 years	5.239
45-50 years	5.328
50-55 years	5.419
55-60 years	5.417
60-70 years	5.415
70-80 years	5.413
80-90 years	5.411
90-100 years	5.409
>100 years	5.407

High Vitamin B12 and low RBC can be caused by a lot of reasons. If you take Vitamin B12 and RBC blood tests and the results are higher than 911 pg/mL for Vitamin B12 and lower than 4.5 mil/uL for RBC, 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 Vitamin B12 and RBC Tests Are Done :

If your doctor wants Vitamin B12 and RBC tests on you, you may need to go through these tests. During the Vitamin B12 and RBC 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 Vitamin B12 and RBC Test reports by your pathologist.

Medical References

• WebMD – Vitamin B12 Blood Test: Uses, Normal Range, and Results
• NIH – Vitamin B12 - Health Professional Fact Sheet
• MedlinePlus – Vitamin B12 level