Dart Den

What should I do if my frog has noticably lost some weight? I am currently feeding vitamin/calcium dusted fruit flies and flour beetle larva. Is there anything else I can do to fatten up my little froggie? Should I consider a fecal? - I have access to lab quality microscopes...does anyone have any idea if I could do one myself if I took in a sample and checked it for parasites, or would this be too difficult?

Definitely get a fecal done, then work from the results you find.