Working Towards Diagnosis - Fearing CF

Hello everyone! I have a 17 month old son who I fear may have CF. He is in the process of being worked up for poor weight gain, malabsorption, and iron-deficiency anemia. Among his symptoms, include poor weight gain (he's in the 14th percentile), malabsorption (he eats like a linebacker and at 17 months old still hasn't tripled his birth weight), has increased fat in his stool, has microcytic/iron-deficient anemia despite being on the max dose by weight of iron, has a persistent, phlegmy cough (he's in daycare, had RSV at 5 months old that did not require hospitalization but has never seemed to clear this cough/cold since September of last year), has discolored teeth (from what I assume is poor calcium absorption), has loose, foul smelling, greasy appearing stools (and will have anywhere from 3-5 VERY full BMs every day). He has had normal thyroid testing, hemoglobin electrophoresis, comprehensive metabolic panel, CBC (with the exception of the microcytic anemia), low iron despite supplement, increased fecal fat (100 droplets), negative ova/parasite, negative stool culture. He has not had sweat testing done yet, and I have asked his doctor to refer us to a CF center locally to have that performed (I'm waiting to hear back from him today so I can schedule the testing). With the research that I have done looking for ANY possible answer, CF always comes up at the top of the list and seems to match all of his symptoms. His newborn screening was negative, but I know that is only 8...
Source: Cystic Fibrosis Newly Diagnosed Forum - Category: Respiratory Medicine Authors: Tags: Newly Diagnosed Source Type: forums