Positive I.F. just out of curiosity

I know that many people don't have their I.F. tested, because of its unreliability, or it comes back negative when it shouldn't, but I wondered how many people have tested positive.

It's purely out of curiosity. Mine tested positive, which I was very relieved about, as it would have been a struggle to get my G.P. to treat me without it, as my serum B12 was 'normal' at 250 and all of my symptoms were in my head apparently.

Last edited by

3 Replies

  • I tested positive for anti-IF antibodies but my mum did not. We both had B12 results of <125ng/L (range 180-2000 - they don't quantify it below 125ng/L in our city) I only got tested after my mum was told she had pernicious anaemia (before her anti-IF antibody results were back). We are both on B12 for life now.

  • i also tested positive on diagnosis 10 years ago. the test was repeated last year (don't know why) this was also positive.

  • I tested positive as well and, like you, was actually relieved to have an explanation for what was going on. My father had been diagnosed with PA but don't know how - that was back in the 1950s.

You may also like...