Hi could anyone please tell me how accurate the guthrie test is. My little one's test came back over their boarder line he was retested a couple of weeks later and this test came back as him been ok. Whats worrying me is he was born with Jejunal Atresia, which I have read can be linked with CF, he also has a mild anul prolaps, esp when he is straning, he had a bout of crop 6 weeks ago and has never fully gotten over it, he's got an awful cough which is wores at night and a terrible runny nose always bunged up. When he opens his bowels he does loads and they are either shiny or sometimes really coated in 'slime' and VERY smelly. He eats like a horse but only puts very small amounts of weight on. his weight gain on the chart is ok just a few hicups, but I just think that for the amount of food he eats he should be putting loads of weight on.He's 9 months now, sorry if I appear to be a bit of a drama queen!!!!!!but I am getting worried so anyone with any advice or experiance of this I would really appreciate any thing you could tell me.Thanks very muchV x<img src="i/expressions/face-icon-small-confused.gif" border="0">