Blood test
Vitamin B12
How much vitamin B12 your body has, the vitamin that helps make red blood cells and keeps nerves healthy.
What it is for
- Vitamin B12
Why people check it
Your body needs B12 to make red blood cells, repair tissue and cells, and look after the nervous system. It comes mainly from animal foods such as meat, fish, milk and eggs. Low levels can seriously affect the blood and your general health, and in women can also bring complications in pregnancy.
- Vitamin B12
Who it is for
People on a plant-based diet, for whom B12 matters most, and anyone who wants to know where their level stands. You can share the result with your doctor.
- Signs
People often check it when
- They feel tired
- They feel weak
- They notice changes in how their nerves feel or work
- They follow a plant-based diet
How to give your sample
The app shows which ways are open for this test before you pay.
A kit at home
A finger-prick kit by post, with the return postage paid. The app walks you through it.
A collection point
A blood sample taken at a collection point near you, found from your postcode in the app.
Someone comes to you
A professional takes the sample at your home or office, on the day you choose.
The result arrives in the app.
It is yours: keep it, or send it to the doctor of your choice: only a doctor can say what it means for you. This page explains what the test is for; it does not replace a consultation.
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