Is Vitamin B12 840 normal, high or low? What does Vitamin B12 level 840 mean?

📅 Medical Review Date: April 17, 2026

Your Vitamin B12 level of 840 is a Normal Vitamin B12 level.

Normal Vitamin B12 levels may indicate underlying health problems. The normal range is typically between 211 pg/mL and 911 pg/mL. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

The normal Vitamin B12 range for men is :211 - 911 pg/mL

Ideal values of Vitamin B12 depending on age (male) :

Age	Ideal Vitamin B12 value
<5 years	228.724
5-10 years	247.937
10-15 years	268.764
15-20 years	291.34
20-25 years	315.813
25-30 years	342.341
30-35 years	371.098
35-40 years	402.27
40-45 years	436.061
45-50 years	472.69
50-55 years	512.396
55-60 years	555.437
60-70 years	602.094
70-80 years	652.67
80-90 years	707.494
90-100 years	766.923
>100 years	831.345

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

Misdiagnosis is more common than people think—and the consequences can be serious. Delayed treatment, unnecessary medication, or worse. If you want a second opinion on your blood work, one option is to upload it to a site like wholebodyprotocol.com, where world-class doctors review your results. They charge a small fee—around $90 (though you'll want to check the latest price as it fluctuates)—and email you a detailed report. With over 12 million people affected by misdiagnosis every year, that little bit of extra peace of mind can go a long way.

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

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

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

Ideal values of Vitamin B12 depending on age (female) :

Age	Ideal Vitamin B12 value
<5 years	229.256
5-10 years	249.091
10-15 years	270.642
15-20 years	294.058
20-25 years	319.5
25-30 years	347.143
30-35 years	377.178
35-40 years	409.811
40-45 years	445.268
45-50 years	483.793
50-55 years	525.651
55-60 years	571.13
60-70 years	620.544
70-80 years	674.233
80-90 years	732.568
90-100 years	795.95
>100 years	864.816

If you take a Vitamin B12 blood test and the results are not in the normal range (211-911 pg/mL), 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 Vitamin B12 Test Is Done :

When your doctor orders a Vitamin B12 test, it involves a straightforward blood draw to measure your Vitamin B12 levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your Vitamin B12 test results are usually available within a few hours.

Medical References

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