Why is my saliva cortisol result so high? Is saliva testing not as accurate?

High cortisol. High cortisol may be due to a number of conditions, including a tumor in the pituitary gland or adrenal gland(s), stress, pain, illness, or taking steroids, or something that interferes with the test. The only way to find out what is causing your cortisol level to be high is to work together with a doctor.