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Iron and vitamins
Vitamin B12
Measures a vitamin important for nerves and red blood cells.
What it measures
It measures the amount of vitamin B12 in the blood.
Why it is tested
It is commonly used to assess deficiency and some neurological symptoms.
Low results
Low results may be associated with vitamin B12 deficiency or poor absorption.
High results
High results may occur with supplements or certain conditions.
Related tests
Active B12, Folate, MCV
Sources
Other markers
Disclaimer
This information is for education only and is not a substitute for medical advice. Results should be interpreted by a qualified clinician alongside your symptoms and medical history.