When should you test your thyroid? - Dr. Christianson A schedule for testing looks something like this: Full panel of testing begins to understand your body’s baseline for health. After treatment has started, there will be focused re-tests that are dialed in specifically on treatment. After your body has reached a steady state, there are tests once a quarter (1-2). Post-program, you will be looking at tests twice a year. You may also enjoy tests approximately 4 weeks after dosage changes.