Is Vitamin B12 400 normal, high or low? What does Vitamin B12 level 400 mean?

📅 Medical Review Date: February 8, 2026

Your Vitamin B12 level of 400 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	219.44
5-10 years	228.218
10-15 years	237.347
15-20 years	246.841
20-25 years	256.715
25-30 years	266.984
30-35 years	277.663
35-40 years	288.77
40-45 years	300.321
45-50 years	312.334
50-55 years	324.827
55-60 years	337.82
60-70 years	351.333
70-80 years	365.386
80-90 years	380.001
90-100 years	395.201
>100 years	411.009

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

Get Advice via Email : Send us your blood test report, and our Vitamin B12 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 Vitamin B12, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

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

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

Receive world-class medical opinion about your normal Vitamin B12 levels over email.Upload blood test report now

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	219.693
5-10 years	228.744
10-15 years	238.168
15-20 years	247.981
20-25 years	258.198
25-30 years	268.836
30-35 years	279.912
35-40 years	291.444
40-45 years	303.451
45-50 years	315.953
50-55 years	328.97
55-60 years	342.524
60-70 years	356.636
70-80 years	371.329
80-90 years	386.628
90-100 years	402.557
>100 years	419.142

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