Is Vitamin B12 156 low, normal or dangerous? What does Vitamin B12 level 156 mean?

📅 Medical Review Date: December 14, 2025

Your Vitamin B12 level of 156 is a Low Vitamin B12 level.

Low 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	214.292
5-10 years	217.635
10-15 years	221.03
15-20 years	224.478
20-25 years	227.98
25-30 years	231.536
30-35 years	235.148
35-40 years	238.816
40-45 years	242.542
45-50 years	246.326
50-55 years	250.169
55-60 years	254.072
60-70 years	258.036
70-80 years	262.061
80-90 years	266.149
90-100 years	270.301
>100 years	274.518

*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

1,51,150

Total number of patients treated

A video message on the treatment of your low Vitamin B12 level

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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 low 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	214.39
5-10 years	217.835
10-15 years	221.335
15-20 years	224.891
20-25 years	228.505
25-30 years	232.177
30-35 years	235.908
35-40 years	239.699
40-45 years	243.55
45-50 years	247.463
50-55 years	251.439
55-60 years	255.479
60-70 years	259.584
70-80 years	263.755
80-90 years	267.993
90-100 years	272.299
>100 years	276.674

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