I have a question about the diagnostic criteria for CF stools. All literature refers to the "frequent, bulky and oily stooling". Let me give a little history. I have a 14 month old dd. She is very healthy, developmentally on track etc. However, she is very petite. Started out in the 10% for weight at birth (actually she was IUGR during pregnancy so they induced two weeks early), gained to the 25% but has since dropped to the 8th percentile. She eats pretty well, drinks all her milk and takes 2-3 solid meals/day. So, what i don't know is why she won't gain significant weight. My ped thinks it is just our genetic make-up, I am small and my husband is too relatively speaking. But, about her stools. She averages 2 per day, sometimes three. Never "runny", always formed and "normal" looking. The odd thing is they almost always occur within 20 minutes of her eating. I don't remember that with my son. What constitutes "bulky" and "frequent"? How do I know if they are "oily"?....I mean I don't touch it and probably wouldn't know what to feel for anyway! Sorry for the graphic questions...! Any ideas would be appreciated. Oh, she has no chest issues whatsoever.