Gig - lad you managed to get some sleep and feel a little better today. specialist nurses are always great IME to talk things through with.
Baskets has explained the tests, and as topsy says - they will just be recording a baseline to check your chemo doesn't effect any of these functions.
Baskets - hello
don't lurk, jump in, you are very welcome 
topsy - pre teen boys are strange creatures, definitely a stroppy time. Also they are caught between that awkward stage of wanting to be independent and assert themselves, and appear cool to their mates, but also being in some ways just a little boy still.
Sparkle - poor DS, I hope something gets sorted for him regarding pai management soon, and that you have a good appointment with the rheumatoloGit. Ducklings sound great, is mother hen very pleased with herself - thinking she's suddenly produced a troop of large babies? 
l4k - so sorry about MIL's DX, although I know it was expected, it's always a shock, but it sounds as if she is handling things well. Good thoughts to her for her treatment and recovery.
Waving and love to everyone. Am having a day of learning for my theory test, - I thought it was just the multiple choice questions, but apparently I also have to do hazard perception (watch videos and click the mouse when I see a hazard) - I will be hopeless at that - I am very slow on anything where you have to click on things.