Unfortunately, you need to take matters into your own hands. Many of the stool tests that U.S. Internists will give you do not do the level of testing required to get to an accurate diagnosis of what parasites you are harboring. I am still struggling to find the ultimate cure but I am 80% better with a combination of herbs and good testing.
This company provides both though the complete testing regime costs about $495 but is very thorough and accurate. The herbal remedies provided are quite effective as well.