I would not even waste my time or money trying to get a diagnosis of parasites from any doctor. The lab tests are not reliable. To have a postive lab test for parasites, there would have to be a worm or an egg in the sample. Even if there is, the lab usually "does not see any parasites."
People here have posted about taking the worms that came out of them to the doctor.....one person said it was written on the chart that "patient brought in garden spiders."
I have had animals my entire life. They sleep with me, eat from my plate, walk all over my kitchen counters. I have gone barefooted for ever too. I eat raw fish and ate half cooked beef before I quit eating beef. I did a parasite cleansing because I was sure I had parasites. I am sure I still have them. No worms came out. I will probably always will have them. Most people DO have them. They are usually dead when they come out. Some are microscopic and you do not even see them come out.