About this test
A simple way to check your Vitamin B12 level
Vitamin B12 is an important nutrient that contributes to normal red blood cell formation, normal neurological function and normal energy-yielding metabolism.
Your body obtains Vitamin B12 primarily through food, particularly animal-derived foods. Supplements and prescribed treatment can also contribute to your Vitamin B12 status.
The Vitamin B12 Blood Test measures your active Vitamin B12 level, giving you a snapshot of your current Vitamin B12 status.
Focused testing
What does this test look at?
Vitamin B12 level
Measures your active Vitamin B12 level to assess your current Vitamin B12 status.
Energy metabolism
Vitamin B12 contributes to normal energy-yielding metabolism and the reduction of tiredness and fatigue.
Neurological function
Vitamin B12 contributes to normal neurological function.
Red blood cell formation
Vitamin B12 contributes to normal red blood cell formation.
What's included
Your biomarker
This test measures active Vitamin B12 as a focused assessment of your current Vitamin B12 status. Open the section below to find out more.
Important Pre-Test Information
Is this test right for me?
When people choose a Vitamin B12 test
This test may be useful if you want to understand your current Vitamin B12 status.
People may choose Vitamin B12 testing when they have concerns about their nutritional status, dietary intake, symptoms that may be associated with low B12, or factors that may affect Vitamin B12 absorption.
It may also be used to monitor Vitamin B12 status over time where testing is clinically appropriate.
A blood test cannot identify every possible cause of symptoms. Your result should be considered alongside your symptoms and wider medical history.
What happens next?
From booking to results
Book your test
Choose an in-clinic appointment or our nationwide home blood collection service.
Blood sample taken
A trained healthcare professional will collect your blood sample.
Sample analysed
Your sample is processed and your Vitamin B12 result is prepared.
Results reviewed
Your results are reviewed as part of our doctor-led service.