What is Vitamin B12 (Vit B12) test?
A blood sample is drawn to evaluate the level of Vitamin B12 present in the body. The body needs this vitamin to make blood cells and maintain a healthy nervous system. Vitamin B12 is usually measured at the same time as a folic acid test because a lack of either one or both can lead to a form of anemia called megaloblastic anemia. Elevated concentrations of Vitamin B12 have been associated with pregnancy, the use of oral contraceptives and multivitamins, and in myeloproliferative diseases such as myelomonocytic leukemia and chronic granulocytic leukemia.
What happens during this test?
This test helps diagnose the cause of anemia or neuropathy, evaluate the nutritional status, and monitor the effectiveness of treatment for vitamin B12 or folate deficiency. Vegetarians or vegans following a strict diet maybe deficient in Vitamin B12 and this test is recommended to evaluate their B12 levels.
When to take this test?
187 pg/mL to 883 pg/mL
Frequency to repeat test
Every 6 months
Precautions to be taken before for the test
No particular precautions are required, unless it is recommended by your doctor.
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