Only proper testing can lead to the important information needed to monitor one’s health.
An AHRQ.gov provides publications to help individuals learn about which tests they need. For some, the difficulty isn’t in the actual testing. The difficulty might be in relating to the physician.
AHRQ wants to help and says:
The single most important way you can stay healthy is to be an active member of your own health care team. One way to get high-quality health care is to find and use information and take an active role in all of the decisions made about your care.