Giving You Back YOUR Life

B12 Signs Symptoms Assessment

The table below allows you to enter your signs and symptoms and immediately read off your B12 deficiency status (in the boxes at the start and end).

It was developed by Dr Chandy over decades of caring for patients, and has been found to be extremely reliable. We recommend that you follow up with a blood serum B12 test; this means that you can document your B12 deficiency status (threshold 200ng/L); on the occasions when the table below indicates B12 deficiency and yet total blood serum B12 test returns a reading above 200ng/L, we have observed that the blood serum B12 levels will fall soon after.  Total blood serum B12 is known to be a poor indicator of B12 deficiency status, and we are investigating a test for active-B12.  See also the Symptoms pages


  1. the table may change colour from white to grey to yellow to red - this is meant to happen to illustrate changing status
  2. the table is written in JavaScript.  if you have disabled JavaScript then you should download the document in Adobe Acrobat format
  3. this page does not save your score. If you wish for a permanent record, please print off the form

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Are you B12 Deficient? Use our diagnstic calculator to find your diagnosis and how we can help you
Charity Events - View our calendar of events and see what is coming up for B12d
Success Stories - Read success stories on patients of Dr Chandy and other B12 Patients

B12d Charity Support Group Blog

  • 04

    What's in Dr Chandy's Book?

    The book distils 46 years of clinical practice as a GP ...

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  • 09

    Books for Doctors Scheme

    Are you a doctor?  Would you like a copy of the bo...

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  • 21

    B12 Foreningen Norway

    This is a B12-union that has been established in Norway...

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  • 07

    Vitamin B12 deficiency in Clinical Practice

    At last - the book "Vitamin B12 deficiency in Clinical ...

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June describes her suffering when doctors didn't follow the standard protocol after any stomach or intestinal operation - to offer B12 replacement therapy
Dr Chandy was nominated for the North East Local Heroes award. The interviewer was at first surprised - people don't get awards for doing what they are paid to do - but she persisted.
The definitive and original guide to B12 deficiency, Dr Chandy interviewed by Chris Jackson of UK BBC Inside Out Team broadcast 31 Oct 2008.
Dr Joseph Chandy explains symptoms and shows the restorative effect on one patient (other patients' families have asked that we edit out their stories unfortunately)
New documentary out from Elissa Leonard in North America, featuring Sally Pacholok and many other internationally renowned experts.
The Scottish Parliament discusses Pernicious Anaemia and vitamin B12 deficiency on Wednesday 7 March 2012.
This video is over 1 hour long and represents real political change - we are at last on our way.
Janette first appeared in the BBC InsideOut documentary in October 2006. Since then the NHS has forced her doctor to withdraw B12 replacement therapy on a number of occasions, and she tells of her struggles with having B12 and then having it taken away.
She has bravely agreed to be filmed without her usual wig, but her memory is playing up because it is so long since her last injection.
Donna, like so many women, wants to live a normal life. Vitamin B12 could give her that chance.
Frankie tells of how she suffered, the tests she had to endure until doctors worked out what was wrong, and what a difference it has made.
Just the way it works for humans, oral B12 can make a world of a difference for your pet. My old cat Smudge chases the young cat again, climbs ladders (and climbs down herself), and is generally as fit as she was many years ago.
Susan gets very tired, which isn't much fun especially as she has so much to do. Here she tells her story.