Just to let you know, most parasite tests come back negative even when a person has them. I have had many medical doctor parasite tests which all came back normal but when I saw a person specializing in this kind of thing who was not a medical doctor, he sent the blood, urine and stool to a specific lab who knows how to properly test such things and it came back with roundworm parasites. You should find yourself a good naturopath who knows what he or she is doing.