What are your baby's symptoms of CF? No I think you can have CF and not always have salty tasting skin, especially in a baby who may not sweat much and or may still have some function in the CFTR mutation. Not all doctors are up to date on Cystic Fibrosis information so if you feel something is not right in your baby you need to look further even if that means switching to a doctor that will listen to you.
Some symptoms of CF are failure to thrive, constipation, diahrea, oily stools, wheezing, chronic cough, sinus issues, frequent lung infections. However, CF is a very individual disease meaning not every person with CF has all the same symptoms or issues. You can get more info that is reliable at The Cystic Fibrosis Foundation's website at www.cff.org