here are a few good links for information on fecal fat tests and results:
http://www.medhelp.org/perl6/gastro/archive/2847.html
http://pediatrics.aappublications.org/cgi/content/abstract/46/5/690
This site has pediatric reference ranges:
http://www.aruplab.com/guides/ug/tests/0020386.jsp
For information on Shwachman-Diamond Syndrome check out Shwachman-Diamond America
