How do I know if I'm responding to a treatment? What tests are used to determine a response?

How do I know if I'm responding to a treatment? What tests are used to determine a response?
(Guest Lecture): October 2022 - Managing Side Effects of MGUS/Smoldering Myeloma Patients
(Guest Lecture): June 2022 - Is CAR-T Cell Therapy the Answer or an Option?
(Guest Lecture): June 2022 - Myeloma Precursor Disease
Are there different kinds of 7+3 and targeted therapies? Can additional drugs be added to 7+3?
(Guest Lecture): October 2022 - Medicare 101 for Myeloma Patients: What You Need to Know for 2023
(Guest Lecture) November 2022 - Nutrition for Myeloma Patients