For general education only. This information does not diagnose a condition or replace medical advice. Your provider will determine which evaluation or treatment is appropriate for you.
What it measures
Vitamin B12 supports healthy blood cells and nerve function. A blood test measures its level in a sample.
Why it may be considered
Testing may be considered when investigating anemia, nerve symptoms, or a concern about intake or absorption.
What affects interpretation
Diet, supplements, medicines, and absorption conditions are relevant. Additional testing may be needed to clarify a result. A higher level does not necessarily mean more energy.
Laboratory reference ranges depend on the test and laboratory. This glossary does not interpret your results or imply that Lola orders this test. Your provider will determine what is relevant to your care.
Questions to bring
- Why is this test relevant to my situation?
- Do I need to prepare or time the sample?
- How does this result fit with my symptoms and other findings?