A hormone panel is performed using blood or saliva to detect the different hormone levels in your body. Hormones are the chemical messengers that coordinate changes throughout many different systems and organs, so a small shift in hormones can often have large-scale effects. For this reason, it’s vitally important to track hormone levels and monitor potential hormonal imbalances. While each test may focus on different functions of hormones, they all essentially work to provide an in-depth examination of your endocrine system and bring your health into focus on a chemical level.