ESR tested yesterday, jumped to 27. GP (not usual one) says leave Pred as is, re-test in 2 weeks. Not been this high since 2 weeks after initial diagnosis of GCA twelve months ago. Normally rides between 3 and 15, during the last 12 months have reduced Pred from 60mg to 12mg. Haven't had a cold or any infection in the last week or so, in fact have felt so good that I haven't taken any pain killers for a few days (for OA). Only thing I can think of is backache, which came on on Sunday. Would that make the inflammation markers rise so high? Doesn't make much sense, but what does these days!! Any words of wisdom would be much appreciated. Thanks. Dorset Lady.