Is it for me?
What happens after the test?Get a full doctor’s report and product advice, all at no extra charge.
Get a downloadable report from a registered doctor explaining your results
Book a free video call with our expert advisors for product tips tailored to you
Meet our expertsGet to know our in-house clinicians
Dr Leah Gorodi
Medical Lead and GP with a special interest in lifestyle medicine and health prevention
Dr Taran Toor
Chief Medical Officer, clinical entrepreneur and GP with an interest in digital health
How it works
Register your test
Receive your test and register it on our app.
Do your test
Collect your blood sample at home.
Send it back
Pop your test in the nearest priority postbox.
Get your results
View your results on the app within 48 hours.
Your privacy, guaranteedJust like your doctor, we take your privacy extremely seriously.
Your data is secure. We use the latest encryption technologies and we’re committed to our data protection responsibilities.
Your data is never sold on, rented out, or shared with third parties for financial advantage.
We work with Care Quality Commission-accredited labs and our blood test kits are all CE-marked.
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B12 is a key vitamin we get from our diets. It’s needed for a bunch of bodily functions, including red blood cell production, tissue and cell repair, and nerve health.
Vitamin B12 deficiency is common, even though it’s naturally found in many animal foods like meat, fish, eggs and dairy. That’s why if you’re a long-term vegan or vegetarian, it’s wise to check your B12 levels regularly.
But you don’t just have to be a vegan or vegetarian to be deficient in B12. If you have any symptoms such as tiredness, low energy, mouth ulcers, breathlessness, pale skin or headaches, these may be a sign of B12 deficiency.
When you have low vitamin B12 levels, you may get the following symptoms:
- pale skin
- low mood
If your B12 levels are particularly low, then mouth ulcers, pins and needles, and extreme tiredness are common. Keeping track of your levels is crucial to prevent any long-term damage to your body.
Talk to your doctor before taking this test. Being pregnant can have a noticeable impact on your results, so make sure to check in with your GP first.
These blood tests are designed for adults aged 18 and over, and are unsuitable for children. Please note that these blood tests cannot treat or diagnose medical conditions. As Holland & Barrett don’t collect any data about your medical history, you must interpret the significance of your results with caution. Be aware that medical conditions, medications, or other aspects of your health can affect your test results. These tests do not replace seeking medical advice and assessment, and if you have an abnormal test result, you should always seek appropriate advice from a trained health professional.