the important thing is to have one come out, then put it in a clear container, using a fork, gloved hand, whatever necessary, then take it directly to a doctor. General practice, gastroenteroligist, whichever and tell then to run tests on it ASAP to determine the breed. And if possible take pics with your camera so they cannot deny it. DO NOT put it in one of those little three jar parasite lab tests. My general practice doc saw it in my own container then gave me albenza. It went two months of diarrea and I STILL had them in the toilet. He said I cannot possibly still have it. The three jar parasite test came back negative although I put a worm in it. As of now I have gone to a natural pharmacy and gotten a parasite cleanse to hopefully expell the new ones that are in me to take to the doctor directly so it isn't sent to some random lab to say there is nothing there. It can grow back if there is even a small microsopic egg left and then take 2-3 years to expell in bowels after that. Take it directly to a doctor, with a ribbon around it!!!