well when i was 18 months old i was placed in the hospital for 19 months and no one could figure out what was wrong with me, I was not able to gain weight and had bowel issues so they tested me for c.f and i was in the grey zone they told my mom and so when i was 3 i came home healthy, it was just something that time had to work out, i am tested each and every year for some reason or another but it is mandatory for my own health they sa y ..wonder why??? but i got that answer when my 7 yr old was tested and his blood test showed he had a mutated gene and a gene partially mutated so he is also tested out every yr as well. It is very rare that things like this happen that it is in the 000000.5 perecentile and we are tested every year due to the gene can be activated by illness and finish the process of growing or so they say but this is the situation and as weird as it is to me, i just do what they ask of me. maybe someone will benefit from it one day . MY 7 yr old when he was about 1 yr and 3 months was hospitalized for 3 weeks for bowel issues as well and weirdly enough they worked themselves out, peeked my curiosity and the doctors as well......