This lab was recommended to me (go back to the Home page for name of company. Its in Arizona).
I went down the "black market route". I got the results sent to my vet. It looks like this lab will mail you directly. If not, I would ring them up and have a conversation with the technician. That's what I did. Once I had a conversation with him he agreed to send the results to my vet. The vet just forwarded them to me. (Vets know more about parasites than doctors)
I agree with North. I took a dose of 2 strong Antibiotics . It cured the diarrhea but gave me bloating/constipation and a white tongue which I STILL have over a year later. Only you can decide just how ill you are and weigh up the pros and cons.