I can't recommend this site highly enough to bearded dragon owners.
The store has everything you need to run your own fecal tests, as well as every medication you would need to treat a sick beardie. They have food, supplements, and all kinds of handy products for very reasonable prices.
I got some fecal float kits from them earlier, and have some other things coming in the mail. Every purchase you make helps support the rescue that the site owner runs.
Many of the supplies and medications can also be used for other reptiles. I feel like every reptile owner should have this site in their bookmarks.