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A vitamin B12 blood test measures the vitamin B12 level in the blood. This test is prescribed by the doctor to check for certain kinds of anaemia. Vitamin B deficiency can cause several health problems, like nerve problems, immune system disorders, and mental problems.
Overview of Vitamin B12 Test
Vitamin B12 is vital for performing multiple functions, such as blood cell production, brain health, and proper nerve functioning. The human body does not produce vitamin B12, so we have to maintain its level through external sources like dietary supplements. A human body can store vitamin B12 for up to 3–4 years, and an excess of it is excreted in the urine. A vitamin B12 deficiency test looks for the amount of one or more vitamin B in the blood or urine. If the result of the vitamin B12 test is not in the normal range, then it may signal certain health conditions like diabetes and liver disease.
Parameters
Vitamin B12