I work in an office that also has a research clinic. Talk with the girls all the time about what they are testing and how they do it. Talk about following guidelines! Everything that they do they have to do in a certain way and they have people that come in and check over their paperwork. I have been there for almost 2 years and have yet to hear any negative type results except for people that are excluded from the studies. For every study that they need 10 people for they have to screen between 50-60. The screening process includes all the tests that are associated with that disease. It is a better work up than the docs can do and it's free to you. The only thing to look for is the clinics reputation and what drug company is sponsoring the test. Good luck with this. I know how asthma can really put a person down and how frustrating it is to get it controlled. qbquilts is correct on the allergies, you need to find your triggers and get them controlled.