Coeliac tests?

[penelope2]

My 6 year old grandson has been tested for CD and was negative.My question is, just how reliable are these tests? On the one hand CUK says they are accurate but I have read that they only pick up about 66% of coeliacs?

So what to believe?

If he was an adult self-diagnosis would be appropriate, trying a strict GFD and see how your body responds but in children this is probably not the way to go.

Any advice please.