Does anybody know what the ranges for children are? I have been fighting for blood tests for my 12 year old for the last year and have finally got the diagnosis I suspected ..... it only took 4 GPs and a consultant! But now have a slightly over range TSH and positive antibodies for hashimotos. We have a paediatrician appointment coming up and I want to be armed with information as GP said they may want him to let him go biochemically under active I.e. >10. He is already struggling.