For expediency sake I highly recommend all recommended tests be done at the beginning of treatment, so that a comprehensive picture of the health status is acquired. This avoids potentially months of care addressing what was thought to be a simple stress response problem when it turns out there was actually some kind of missed infection in the body or environmental toxin or something that ends up truly being at the root of the patient’s health complaint. However, if there are any budgetary concerns, patients can start with one test.