Just discovered a nifty app to calculate your DAS. It's for iPhones but works on iPads too. There is an iPad app but in Japanese, although this is strangely understandable. Anyway, hours of fun to be had. Just search for DAS28 in the app store.
But it makes me realise that I'm never going to make the grade for biologics if my ESR stays low (which it always has been (fingers' crossed)) unless every joint in my body is tender and swollen. particularly as my feet are the worst bit and they don't count. Not a pleasant thought. Never thought I'd get high ESR envy! polly