What causes high Vitamin B12 and low TIBC?

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

If your Vitamin B12 is in between 211 pg/mL and 911 pg/mL and your TIBC is in between 250 mcg/dL and 450 mcg/dL then you need not worry as these are the normal ranges for Vitamin B12 and TIBC 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	214.737
5-10 years	218.54
10-15 years	222.41
15-20 years	226.349
20-25 years	230.358
25-30 years	234.438
30-35 years	238.59
35-40 years	242.815
40-45 years	247.115
45-50 years	251.491
50-55 years	255.945
55-60 years	260.478
60-70 years	265.091
70-80 years	269.786
80-90 years	274.564
90-100 years	279.427
>100 years	284.376

*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 TIBC : 250 - 450 mcg/dL

Ideal values of TIBC depending on age :

Age	Ideal TIBC value
<5 years	254.428
5-10 years	258.934
10-15 years	263.52
15-20 years	268.187
20-25 years	272.937
25-30 years	277.771
30-35 years	282.69
35-40 years	287.696
40-45 years	292.791
45-50 years	297.976
50-55 years	303.253
55-60 years	308.624
60-70 years	314.09
70-80 years	319.653
80-90 years	325.314
90-100 years	331.075
>100 years	336.938

High Vitamin B12 and low TIBC can be caused by a lot of reasons. If you take Vitamin B12 and TIBC blood tests and the results are higher than 911 pg/mL for Vitamin B12 and lower than 250 mcg/dL for TIBC, 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 TIBC Tests Are Done :

If your doctor wants Vitamin B12 and TIBC tests on you, you may need to go through these tests. During the Vitamin B12 and TIBC 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 TIBC 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