Vitamin B12 testing is a diagnostic procedure used to evaluate vitamin B12 levels in the body. It is essential for identifying B12 vitamin deficiency and assessing overall nutritional health. The vitamin B12 test measures the concentration of vitamin B12 in the blood and compares it to the vitamin B12 normal range (This range signifies optimal levels of the vitamin).
Yes, it is possible to have normal B12 levels within the vitamin B12 range and still be deficient. This can occur when the body fails to effectively utilize vitamin B12, despite its presence in the bloodstream.
The normal range of Vitamin B12 is between 200 pg/mL and 900 pg/mL.
Yes, for accurate results of the Vitamin B12 Test, it is suggested to fast for at least 6-8 hours before the blood sample is taken.
Yes, as your healthcare provider might suggest, It is advised to take a B12 test on an empty stomach.
Age in Years |
Male |
Female |
14–18 |
15 mcg (600 IU) |
15 mcg (600 IU) |
19–50 |
15 mcg (600 IU) |
15 mcg (600 IU) |
51–70 |
15 mcg (600 IU) |
15 mcg (600 IU) |
>70 |
20 mcg (800 IU) |
20 mcg (800 IU) |