Oh no, girlsyearapart - that sounds like a terrible reaction! I'm sorry you had to go through that.
We had our egg challenge today and DD failed too.
We got there on time (with our hard boiled eggs), they spent about an hour weighing, measuring, filling in forms etc. before they started giving her anything.
In the end we didn't need the eggs (not sure whether they'd use them anyway - one letter said to bring some, one said not to!).
They mixed powdered egg into some soya vanilla pudding (that dd normally loves). She ate the 1/4 teaspoon, had the 1/2 teaspoon with some fussing but completely refused any more. She started scratching and has come up in lots of spots. They said she probably knew there was something wrong with the pudding - maybe could feel it tingling in her mouth or something. They did monitor her very carefully - checking blood pressure, heart rate, temperature etc. regularly.
They gave her some piriton and we had to wait another 2 hours for any further reaction before they let us leave. She's been ok since (went to the zoo this afternoon).
Apparently, to complete the challenge she would have had to eat the entire 250ml of pudding/egg in increasing quantities at a time - leaving a 20 min gap between each amount - and the last part of the challenge would have been to have raw egg touched to her lip. We're some way off that.
At least we know where we are now. We've been told she can have cakes, biscuits and maybe pastry with egg in, but nothing more (no egg pasta or actual eggs).
I'm really glad it wasn't a CMP allergy test. A couple of weeks ago I had some milk and then kissed her on the forehead and she came up in a big red spot - no way she's drinking any!