Thanks mspotatochip.
My ds was gluten free for four months before he was seen by a paed. The gp suggested trying it to see if he improved.
The paed was seeing him for something else, when we mentioned his symptoms and how he'd improved on a gf diet. He ordered the test and told us to put ds back on gluten for at least 3 months prior to the appointment. Then, once we'd started him back on it, we got a letter saying the appointment had been pushed back almost 8 weeks!
Ds has been really struggling since going back onto gluten and it affects his behaviour and concentration levels as well as his digestive system, so I rang the GP just for advice really and she said she could order the test herself and as he'd already been back on gluten for two months we could have it done that week and the results should be back with her within a week.
Need to speak to her again though really, as we're not sure how him not eating anything, let alone gluten, for 5 days might affect the results.
GP said if his results come back inconclusive she'd recommend keeping him gf for a month, then trying again.
We are taking him back off gluten as soon as the results are in either way though, as there's no way he can carry on like this whilst waiting for a biopsy and we have already seen the improvement in his behaviour and bowels when he is gf.
Hope you get the results soon and your dd feels better.