<<Disclaimer: Verify this information before applying it to your situation.>>

>does anyone know if there is any
> requirement as to how large the communion wafer must be?
>That is, we can always reduce the amount of gluten ingested
>by reducing the size of the wafer.

It can certainly be very small -- my mother received just a tiny piece
when she was sick in the hospital. This was necessary since she was very
nauseated from the cancer and would have risked vomiting from anything
larger than a tiny bit. Even a little crumb of bread will do, judging
from dimly recalled stories of priests celebrating Mass in perilous
circumstances.

Hmmm... Extending this idea of miniaturizing, how about diluting a tiny
bit of wheat in a GF wafer? That would allow even less gluten than just a
crumb of low-gluten wheat wafer.  Where there's a will, there's a way...
This won't help the extremely sensitive, but it would help many others.

                           Peace, Cathy Flick