The insurance companies are dictating what the doctors can and cannot test for by refusing to pay for the tests. Doctors can hardly afford to pay for the tests themselves. People don't want to pay because they are already paying for insurance. The problem is the insurance companies are the ones telling the doctors how they can and cannot practice medicine.
Good news is it doesn't matter because the cure is the same regardless of what ails you. Click the Cure Zone Cleansing button and do all the cleanses that are recommended. You will get well.
Yes it can help to know what you are up against because it is easier to defeat an enemy that you know and understand. But many parasites are pleomorphic and they cycle. Half the time you have bacteria and the other half the time you have fungus.
You can often figure out what is making you sick by matching the symptoms and save yourself the cost of seeing a doctor who will tell you that you are a hypochondriac and charge you a whole bunch of money for insulting you like you are a masochist and you enjoy it. †