What causes high HbA1c and low Vitamin B12?

High HbA1c and low Vitamin B12 can be caused by many reasons.

If your HbA1c is in between 4 % and 5.7 % and your Vitamin B12 is in between 211 pg/mL and 911 pg/mL then you need not worry as these are the normal ranges for HbA1c and Vitamin B12 respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Long-term complications of diabetes develop gradually. The longer you have diabetes the higher the risk of complications. Eventually, diabetes complications may be disabling or even life-threatening. Possible complications include:

• Kidney damage
• Eye damage
• Foot damage
• Alzheimer's disease
• Heart and blood vessel disease

HbA1c treatment - Click to read 10 GOLDEN ARTICLES on Diabetes

Normal range of HbA1c : 4 - 5.7 %

Ideal values of HbA1c depending on age :

Age	Ideal HbA1c value
<5 years	4.042
5-10 years	4.084
10-15 years	4.126
15-20 years	4.169
20-25 years	4.212
25-30 years	4.256
30-35 years	4.3
35-40 years	4.345
40-45 years	4.39
45-50 years	4.436
50-55 years	4.482
55-60 years	4.529
60-70 years	4.576
70-80 years	4.624
80-90 years	4.672
90-100 years	4.721
>100 years	4.77

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

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

Ideal values of Vitamin B12 depending on age :

Age	Ideal Vitamin B12 value
<5 years	213.194
5-10 years	215.411
10-15 years	217.651
15-20 years	219.915
20-25 years	222.202
25-30 years	224.513
30-35 years	226.848
35-40 years	229.207
40-45 years	231.591
45-50 years	234
50-55 years	236.434
55-60 years	238.893
60-70 years	241.377
70-80 years	243.887
80-90 years	246.423
90-100 years	248.986
>100 years	251.575

High HbA1c and low Vitamin B12 can be caused by a lot of reasons. If you take HbA1c and Vitamin B12 blood tests and the results are higher than 5.7 % for HbA1c and lower than 211 pg/mL for Vitamin B12, 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 HbA1c and Vitamin B12 Tests Are Done :

If your doctor wants HbA1c and Vitamin B12 tests on you, you may need to go through these tests. During the HbA1c and Vitamin B12 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 HbA1c and Vitamin B12 Test reports by your pathologist.

Medical References

• MedlinePlus – Hemoglobin A1C (HbA1c) Test
• NIH – The A1C Test & Diabetes
• Mayo Clinic – A1C test