Is Vitamin B12 135 low, normal or dangerous? What does Vitamin B12 level 135 mean?

📅 Medical Review Date: December 28, 2025

Your Vitamin B12 level of 135 is a Low Vitamin B12 level.

A vitamin B12 level of 135 pg/mL usually means the body has low vitamin B12 stores. It suggests B12 deficiency. Low levels of vitamin B12 can cause fatigue, weakness, pale skin, shortness of breath, numbness in hands and feet, balance problems, and memory issues. This can be caused by pernicious anemia, vegetarian diet, Crohn's disease, or gastric surgery. Further tests are often needed to identify the cause and guide appropriate treatment.

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.

Important - Scroll to the end of this article to see how our patients managed their low Vitamin B12 levels

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	213.849
5-10 years	216.736
10-15 years	219.662
15-20 years	222.627
20-25 years	225.632
25-30 years	228.678
30-35 years	231.765
35-40 years	234.894
40-45 years	238.065
45-50 years	241.279
50-55 years	244.536
55-60 years	247.837
60-70 years	251.183
70-80 years	254.574
80-90 years	258.011
90-100 years	261.494
>100 years	265.024

*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

Important - Read more questions about low Vitamin B12 levels after this video message

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

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Important - At the end of this article read how our patients treated their low Vitamin B12 levels

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

Important - At the end of this article read how our patients treated their low Vitamin B12 levels

Also Read :How our patients treated their low vitamin b12?

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	213.934
5-10 years	216.909
10-15 years	219.925
15-20 years	222.983
20-25 years	226.084
25-30 years	229.228
30-35 years	232.415
35-40 years	235.647
40-45 years	238.924
45-50 years	242.246
50-55 years	245.614
55-60 years	249.029
60-70 years	252.492
70-80 years	256.003
80-90 years	259.563
90-100 years	263.172
>100 years	266.831

Also Read :Symptoms of Low Vitamin B12

Can Low or High Vitamin B12 cause Heart Problems?

Read on to know how abnormal Vitamin B12 affects heart

Know more

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.

Important :How our patients treated their low vitamin b12?

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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.