Vitamin B12

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About

Vitamin B12 is found in meat, milk, and eggs, and is essential for the maturation of red blood cells in the body.

Candidate

This test is needed to diagnose the cause of anemia or neuropathy. It is required if you have anemia (a reduced number of red blood cells and/or decreased hemoglobin concentration) not caused by iron deficiency, if you are undergoing treatment for vitamin B12 or folic acid deficiency, or for diagnosing neuropathy.

Preparation

For this test, you need to fast. If you are consuming juices or taking multivitamin supplements, discontinue them at least 7 days before testing for vitamin B12. NOTE for individuals on vitamin B12 therapy: Before the follow-up test for vitamin B12, wait at least 7 days after completing the therapy.

Treatment

For vitamin B12 testing, blood is drawn from a vein.

Result

Results are available on the same day.

Ivana, Patient Coordinator

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Ivana, ZagrebMed patient coordinator