Parasite testing by examination of stool samples will often require multiple samples and the use of a lab that specializes in this type of testing. More comprehensive testing, such as a Comprehensive Digestive Stool Analysis with Parasitology is suggested and available from the same stool sample when bacterial imbalances or digestive problems are suspected. Examples of laboratories offering such services include Meridian Valley Labs and Great Smokies Diagnostic Labs and more information along with their home pages can be found here.
If there were dreams to sell, what would you buy? Thomas Lovell Beddoes
 
We grew up founding our dreams on the infinite promise of American advertising. I still believe that one can learn to play the piano by mail and that mud will give you a perfect complexion. Zelda Fitzgerald
 
Few, save the poor, feel for the poor. 'The Poor'
GLOSSARY
Parasite: An organism living in or on another organism.