The only way to know if hormones are in balance is to test them. Therefore, it’s vital to partner with a lab that understands subtle differences between testing mediums, and has both the experience and technology to deliver the most accurate results.

ZRT is your Lab of Choice because we offer three different test mediums. This enables you to choose the test medium that’s best for your patient, so you can always count on the most meaningful results.


Key Facts About ZRT:

  • Over 8 million tests completed
  • Operating for nearly 20 years
  • Developed three distinct hormone testing methods
  • Performs testing for over 4,000 health care providers in 96 countries and all 50 states
  • Partners with the CDC & NIH on research
Learn More About Testing

Video: Steroid Hormone Testing 101

Paper: About Hormone Testing in Saliva, Blood Spot & Dried Urine

Research: Innovation is in Our Blood

See Our Sample Types