b12 testing : My worry is this. I had low b12... - Thyroid UK

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b12 testing

Angie10116 profile image
12 Replies

My worry is this. I had low b12 2 years ago (aug 2022) , it came back in the 200s, can’t quite remember. I had loading doses and it came back in 900s. The doctors left it at that. Then in September of this year (2 months ago) it came back at 390 (180-900). Ive been feeling worse and worse ever since, and now I have a lot of symptoms, also now paired with mental symptoms.

Symptoms: weird sensation in teeth, burning tongue and throat, tiredness, foggy brain, muscle weakness, shortness of breath, coughing. numbness and burning sensation in hands and feet, feeling low etc

I want to push for one more b12 test.. but I have been supplementing for nearly 2 weeks….1900ug per day. So I’m not sure what to do…

My questions are, when is the earliest I can do another b12 test and how long to wait to get the supplemented b12 out of my body

Thank you <3

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Angie10116
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SlowDragon profile image
SlowDragonAdministrator

Unless you have Pernicious Anaemia, you can maintain GOOD B12 with daily supplements

Angie10116 profile image
Angie10116 in reply to SlowDragon

I’m not sure if I have it. It worrying that it dropped like that for no reason… I did get tested for the pernicious anemia but it was fine. I know that the test doesn’t always work

SlowDragon profile image
SlowDragonAdministrator in reply to Angie10116

B12 frequently very low unless supplement continuously when on levothyroxine, especially if not on high enough dose levothyroxine

Are you vegetarian or vegan

Angie10116 profile image
Angie10116 in reply to SlowDragon

Oh I see. I didn’t know that it dropped when taking Levo. 2 years ago it dropped by itself as I wasn’t on Levo then. No, I have a varied diet

SlowDragon profile image
SlowDragonAdministrator in reply to Angie10116

You quite likely started having thyroid issues years before diagnosis

Angie10116 profile image
Angie10116 in reply to SlowDragon

I had hyperthyroidism before, so was on different meds 😄

SlowDragon profile image
SlowDragonAdministrator in reply to Angie10116

Yes but Graves’ disease also significantly affects vitamin levels

Angie10116 profile image
Angie10116 in reply to SlowDragon

Ah right, I didn’t know that! Thank you

Angie10116 profile image
Angie10116 in reply to SlowDragon

Also my folate has been 2.0 for years! I only found out a couple days ago as doctor showed me a graph. So I’ve been deficient for year

SlowDragon profile image
SlowDragonAdministrator in reply to Angie10116

Core vitamins…..folate, B12 and vitamin D are the first to drop

Angie10116 profile image
Angie10116 in reply to SlowDragon

Thank you very much. I hope you’re doing well. Wishing you a lovely evening

PHappy profile image
PHappy in reply to Angie10116

Go to youtube, tap in" diagnosing and treating B12 deficiency" it is a documentary. Sally Pacholok is in it. She used to be known as "Sally B12" since she, as a nurse, pestered doctors about proper B12 testing for symptomatic patients which was and is not done.

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