Adrenal Hormone Resources for Healthcare Providers

ZRT has tested adrenal hormones for over 1.4 million since 1998, and we offer two ways to test:

Saliva has long been used for measuring cortisol because it’s simple and non-invasive. 

Dried urine is just as effective for measuring cortisol, and it offers the added benefit of testing epinephrine and norepinephrine at the same time - so patients who want a complete adrenal assessment can now get more markers.

Learn more about how to implement our testing in your practice with these educational resources:


ZRT Laboratory's Hormone Testing

Below is a series of resources designed to help you get started with ZRT's testing. If you need additional help, please contact us at or 1.866.600.1636.