What causes high Vitamin D and low HbA1c?

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

If your Vitamin D is in between 75 nmol/L and 250 nmol/L and your HbA1c is in between 4 % and 5.7 % then you need not worry as these are the normal ranges for Vitamin D and HbA1c 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 D : 75 - 250 nmol/L

Ideal values of Vitamin D depending on age :

Age	Ideal Vitamin D value
<5 years	76.288
5-10 years	77.598
10-15 years	78.93
15-20 years	80.285
20-25 years	81.663
25-30 years	83.065
30-35 years	84.491
35-40 years	85.942
40-45 years	87.418
45-50 years	88.919
50-55 years	90.446
55-60 years	91.999
60-70 years	93.579
70-80 years	95.186
80-90 years	96.82
90-100 years	98.482
>100 years	100.173

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

If you want your blood test report to be interpreted by Vitamin D specialist, then you can upload your report. Our Vitamin D 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 D levels include:

• Liver disease
• Celiac disease
• Your body isn’t properly absorbing or using vitamin D.
• Crohn's disease
• Kidney disease

If you want your blood test report to be interpreted by Vitamin D specialist, you can upload your report. Our Vitamin D 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 HbA1c : 4 - 5.7 %

Ideal values of HbA1c depending on age :

Age	Ideal HbA1c value
<5 years	4.069
5-10 years	4.139
10-15 years	4.21
15-20 years	4.282
20-25 years	4.356
25-30 years	4.431
30-35 years	4.507
35-40 years	4.584
40-45 years	4.663
45-50 years	4.743
50-55 years	4.824
55-60 years	4.907
60-70 years	4.991
70-80 years	5.077
80-90 years	5.164
90-100 years	5.253
>100 years	5.343

High Vitamin D and low HbA1c can be caused by a lot of reasons. If you take Vitamin D and HbA1c blood tests and the results are higher than 250 nmol/L for Vitamin D and lower than 4 % for HbA1c, 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 D and HbA1c Tests Are Done :

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

Medical References

• MedlinePlus – Vitamin D Test
• MedlinePlus – 25-hydroxy vitamin D test
• Mayo Clinic – 2425D - Overview: 25-Hydroxyvitamin D:24,25-Dihydroxyvitamin D Ratio, Serum