Key facts Vitamin B12 (cobalamin) is a B vitamin. If you are vegetarian or vegan, you may be low in vitamin B12. Vitamin B12 and folate are necessary to make red blood cells and for tissue repair. Low levels of B12 could mean you have a type of anaemia. On this page What is a vitamin B12 blood test? Why would I need this test? How should I prepare for this test Understanding your results Resources and support Related information on Australian websites What is a vitamin B12 blood test?Vitamin B12 is one of the B group of vitamins. It is also known as cobalamin. It is vital for making red blood cells and for cell and tissue repair. Vitamin B12 also helps with nerve health.Vitamin B12 and folate work together to help with cell functioning.The vitamin B12 blood test measures the amount of vitamin B12 in your blood. Your folate level is usually tested at the same time.Why would I need this test?You may need this test if you have: symptoms that suggest a low level of Vitamin B12 a medical co...
