Thanks Hazel, I didn't realise that. But the first test came back negative and we had to wait 4 days to hear that. The discharge notes said it was an unknown infection. My guess is that it was the wound from the biopsy, which thankfully has shown nothing sinister. My Dad is fine now he is home. No incontinence and today he decided, without prompting, to take the dog for a walk. Just as well as after he got home it poured down all day. I should know as I went for a 6 mile walk, as it is only 5 months until my Sahara trek for AS, and I got wet through. Not likely to be a problem in the desert.