well, I"ll try to answer a few of your questions....I am a nurse and work in a clinic, so I have an idea how results/records/etc works. If you want copies of your test results, you are entitled to have copies of them...either ask the doctor at your appointment, or call in and ask for copies of your last results. Usually they can just give you copies of one or two tests without a problem...but if you want a whole bunch, like the last years worth or all test results, most places will charge you for your records. Also, for more than a few results, they may ask you to sign a records release as well.
When you change GI docs, the new doctor does not automatically get your records from your past doctor. You need to sign a records release form. You can do it either at your new doctor or at your old doctor, but you need to sign for them. Then they will get them to the new doctor either by mail or fax. Depends on there policies.
In regards to infection, yes, usually its determined by an elevated white count, but it is possible for it to be masked. For example, if your on steroids , it can often mask the infection and show a normal white count when in fact you do have an infection.
In terms of Crohns, I"m not very knowledgeable about the theories that are being said to cause it...as a matter of fact, I"m trying to rack my brain as to what MAP is? lol. But i hope I was a help in other questions......