Thanks to Annie & Jo*Mar for your replies.

I seem to have caused a bit of confusion with the word ' surgery '. In England, under our National Health Service we register with a Doctor who is near to where we live, sometimes that practice is full and we get allocated a Doctor, with no choice. As we don't pay to see the Doctor the service we get is much more restricted. The place where we go to see the Doctor we call a surgery. I presume in days gone by they did actually carry out the surgery there ! We say we are going to 'ring the surgery for an appointment etc' Hope I have cleared that up.

Yes I did have a TPMT test before I started Aza which was fine, as far as I am aware I haven't had an infection and my temperature is normal.

Perhaps it's just one of those anomalies and my next test will be normal.

That's what I am hoping anyway !