Intrinsic factor test: Hey guys, I am... - Pernicious Anaemi...

Pernicious Anaemia Society

31,804 members22,933 posts

Intrinsic factor test

Job387 profile image
5 Replies

Hey guys, I am getting the intrinsic factor test tomorrow which my doctor highlighted as an unreliable test but managed to convince him to let me have it regardless ! Anyway, I have taken a single b12 supplement yesterday evening. This is probably a dumb question, but will this impact the test? Thank you 😊

Written by
Job387 profile image
Job387
To view profiles and participate in discussions please or .
Read more about...
5 Replies
Nackapan profile image
Nackapan

No . You may not be able to absorb it anyhow.

The test picks uk 50% of thoses with PA

If negative no antibodies on the day . Doesnt mean you have not got it.

Ay least your Gp aware of that .

There are many reasons s for a B12 absorbtion problem.

Or for low B12

The chairman had 3 tests before a positive one !!

Job387 profile image
Job387 in reply to Nackapan

Interesting! The tests hes requested are Gastric parietal cell autoantibodies and Intrinsic factor antibodies. It will be interesting to find out the results. Either way he mentioned injections may be the way forward so it doesn't look like I'll have to convince the GP which unfortunately seems to be the case with so many people on this group.

Good luck job387

Job387 profile image
Job387 in reply to

Thank you!!!

fbirder profile image
fbirder

The old tests for IF antibodies would give a false positive if serum B12 was high, requiring a long wait after an injection.. That test was replaced by a more modern one about 25 years ago, where you needed to wait a few weeks. That, in turn was replaced about 10 years ago by the 'modern' test that, supposedly, has no interference at all.

You may also like...

Intrinsic factor antibody test

Hello, My GP has agreed to test this antibody. I have Hashimoto's/hypothyroidism and take 150 mcg...

Intrinsic Factor Test

been self administering tests, to say she forgot to order an \\"intrinsic test\\". When I looked...

Positive intrinsic factor tests

Hi there, I have had 2 positive intrinsic factor antibody tests. I also have all of the symptoms...

Intrinsic Factor test result

Hello there. I have just had the result of my IFA test and was hoping someone could help with...

intrinsic factor test

My GP agreed to do an intrinsic factor antibody test. The test he did was IgA and the results came...