📉 Salivary cortisol testing shows your true stress story—spikes, crashes, and everything in between. Toxic stress shows up as cortisol in saliva. Salivary cortisol testing offers a clear view of your body’s stress response throughout the day. Measuring cortisol in your saliva is one of the most accurate ways to measure it. It also gives you the levels of free cortisol, i.e. what’s biologically available which is often a more useful marker than total cortisol. By measuring free cortisol levels a