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ZRT is a CLIA certified diagnostic laboratory and the leader in hormone and wellness testing. We provide accurate and meaningful test results that assist healthcare providers in making informed treatment decisions.

In 15 years ZRT has tested over 2 million people, and currently performs testing for over 4,000 healthcare providers in 26 countries and all 50 states. ZRT is also engaged in ongoing collaborative clinical research with investigators around the world, including the CDC, NIH and prominent universities.

Headquartered in Portland, Oregon, ZRT is the recognized innovator of saliva, dried blood spot and dried urine testing methodologies. The company was honored to earn a place on the list of 100 Best Companies to Work For in Oregon this year.

Leadership Team

Our leadership team is comprised of experienced scientists and providers who work to further our mission of innovating hormone testing. Learn More

Industry Events

Look for us at industry events both domestically and around the globe. Learn More

ZRT in the News

Stay up-to-date on news about ZRT and articles published by our scientists. Learn More

Careers at ZRT

Join the growing team for the leader in innovative hormone testing. Learn More