Thanks for your reply. I haven't been offered injections, GP was happy with my results as b12 is 'borderline'. He just suggested increase in diet but I eat eggs and red meat already! I pushed for the intrinsic factor test but expecting he won't offer injections unless that result is positive 🤷
There are currently new NICE (National Institute for Health and Care Excellence) guidelines in development for Pernicious Anaemia and B12 deficiency. These should be published next year.
If you click on "project documents" then on "consultation comments and responses" it gives a good insight into current issues around diagnosis and treatment (over 40 pages).
Each CCG (Clinical Commissioning Board/Health Board/NHS hospital trust in UK is likely to have its own local guidelines on treatment/diagnosis of B12 deficiency. Might be worth tracking down the local guidelines for your area of UK and comparing the info in them with BNF, BSH and NICE CKS links.
Some local guidelines have been posted on forum so try a search of forum posts using terms "local guidelines" or try an internet search using "name of CCG/Health Board B12 deficiency guidelines" or submit a FOI (Freedom of Information) request to CCG/Health board asking for access to or a copy of local B12 deficiency guidelines.
Two useful B12 books
"What You Need to Know About Pernicious Anaemia and B12 Deficiency" by Martyn Hooper
Martyn Hooper is the chair of PAS (Pernicious Anaemia Society).
BNF treatment info in book is out of date. See BNF hydroxocobalamin link in this reply.
"Could it Be B12?: An Epidemic of Misdiagnoses" by Sally Pacholok and JJ. Stuart (USA authors)
Very comprehensive with lots of case studies.
Misconceptions
Please be aware that PA and B12 deficiency are not always as well understood by health professionals as they should be and you may meet doctors, specialists, nurses etc who have misconceptions (wrong ideas) about PA and B12 deficiency.
I suggest you have a look at the links below which list some of the common misconceptions that health professionals may have.
B12 article from Mayo Clinic in US (detailed, aimed at researchers and health professionals)
Links to forum threads where I left detailed replies with lots of B12 deficiency info eg causes and symptoms, more UK B12 documents, B12 books, B12 websites and B12 articles and a few hints on dealing with unhelpful GPs.
Some links may have details that could be upsetting.
It looks as though they have covered most everything. The only other tests I would request, knowing what I know now, would be a homocysteine and methylmelonic acid test. These should me done prior to supplementing. Good luck to you.
If yes to B12 deficiency symptoms then UK guidelines indicate you should be treated even if serum (total) B12 is within normal range.
Summary from BSH Cobalamin and Folate Guidelines has this statement
(may be worth showing it to GP and including it as a quote in any letter you write to GP)
"In the presence of discordance between the test result and strong clinical features of deficiency, treatment should not be delayed in order to avoid neurological impairment"
NICE CKS (Clinical Knowledge Summary) B12 deficiency and Folate deficiency includes the statement
" Note: clinical features of vitamin B12 deficiency can occur without anaemia and without low serum levels of vitamin B12. "
If treatment for B12 deficiency is denied, delayed or inadequate there can be an increased risk of permanent neurological damage including damage to spinal cord.
If GP is reluctant to treat you and you have symptoms consistent with B12 deficiency, may be worth mentioning SACD to GP. I'm not medically trained and I am not saying you have this but I am saying that GP (and any specialists you see) should be aware that SACD is a potential consequence of B12 deficiency.
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