It seems like adjuvant treatment is rather routine at this point? And the question would be “do I believe the test when it tells me the cancer is gone?” When y

It seems like adjuvant treatment is rather routine at this point? And the question would be “do I believe the test when it tells me the cancer is gone?” When you know it’s not 100% accurate? Or do you always do the adjuvant treatment considering the very small chance the test is wrong has a very high cost (death)?