I have some neurological symptoms of b12 deficiency and my levels fell when I briefly stopped supplementing, so I was thinking maybe I should be tested for pernicious anaemia. So my questions are:
a) If taking b12 supplements isn't helping me, would it be worth trying patches? Are patches anything like injections in terms of getting enough b12 into you via a medium that doesn't involve the gut?
b) If I start supplementing now, I assume it affects testing later (like the active b12 test), but I feel so unwell and confused, I feel like I need to start doing something now. Would it be okay to start supplementing and have the antibody test?
Many thanks. x