ZRT Laboratory

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Beaverton, OR
ZRT Laboratory

Innovating hormone testing since 1998 | Promoting wellness to address menopause, infertility, weight management, adrenal fatigue, depression & more.

03/12/2026

🌻 March is Endometriosis Awareness Month, a time to bring attention to a condition that affects an estimated 1 in 10 women worldwide.

Endometriosis is a complex condition influenced by hormonal signaling, particularly estrogen activity. Research continues to explore how hormonal regulation and inflammatory processes contribute to the growth and persistence of endometrial-like tissue outside the uterus.

Advances in laboratory science are helping clinicians better measure and understand these hormone dynamics. At ZRT Laboratory, we continue to improve how steroid hormones are measured in saliva and dried blood spot samples, helping clinicians gain clearer insight into hormone activity.

🔬 Interested in the science behind improved hormone measurement?

Join Dr. David Zava for an upcoming webinar where he will discuss why ZRT transitioned from conventional immunoassays to LC-MS/MS for measuring steroid hormones in saliva and dried blood spot samples.

In this session, Dr. Zava will explain:

• The technical differences between immunoassays and LC-MS/MS
• Why LC-MS/MS provides more accurate measurement of steroid hormones
• How certain hormone therapies can interfere with immunoassay results

💡 The webinar will conclude with a live Q&A session.

Register here:
https://bit.ly/4umoGW1

03/06/2026

🧪 What’s behind ZRT’s recent laboratory upgrade?

Join Dr. David Zava, PhD — Founder, CEO, and Chief Scientist of ZRT Laboratory as he takes a deeper look at the science guiding ZRT’s transition to LC-MS/MS for measuring steroid hormones in saliva and dried blood spot samples.

In this webinar, Dr. Zava will explain how testing methodology can influence hormone measurements and why this shift improves the specificity of steroid hormone testing.

In this session, we’ll also explore:

• The technical differences between immunoassays and LC-MS/MS
• Why immunoassays may be less accurate when hormone levels are low
• How certain hormone therapies can influence results depending on the testing method used

💡 The presentation will conclude with a live Q&A session with Dr. Zava.

📅 March 24
⏰ 10am PT / 1pm ET

Register here: https://bit.ly/46FlQkC

03/04/2026

Our March events are coming up, and we’re excited to announce an upcoming webinar with Dr. David Zava discussing ZRT’s recent laboratory upgrade. 🔬

On March 24, Dr. Zava will discuss why ZRT transitioned from conventional immunoassays to LC-MS/MS for measuring steroid hormones in saliva and dried blood spot samples.

In this session, he will review the technical differences between these methods, explain why immunoassays may be less accurate when hormone levels are low, and discuss how certain hormone therapies can affect test results depending on the testing method used.

💡 The webinar will conclude with a live Q&A session.

🔗 Register now! https://bit.ly/46FlQkC

02/18/2026

Heart health in women is dynamic.

This American Heart Month, we are highlighting how cardiovascular risk factors shift across hormonal stages, from early reproductive years through postmenopause.

Understanding blood pressure trends, lipid changes, metabolic markers, and inflammatory patterns can support a more complete cardiometabolic picture.

At ZRT, our cardiometabolic panels are designed to help providers evaluate these factors within a broader physiological context. Learn more about our dried blood spot testing options at zrtlab.com.

02/03/2026

We’re heading out on the road this February! ✈️

Join ZRT Laboratory at these upcoming conferences as we connect with providers and share what’s next in hormone testing. We hope to see you there.

01/15/2026

It’s here. 🎉

Our laboratory upgrades and new panel menu are now available, marking the next step forward in hormone and wellness testing at ZRT. With enhanced laboratory capabilities and a more streamlined testing experience, we’re continuing to support providers with tools they can trust.

Learn what’s changed—and what’s staying the same:
👉 www.zrtlab.com/testing-upgrade

01/07/2026

ZRT testing is getting an upgrade. ✨

On January 15, 2026, we’re introducing a laboratory modernization that elevates our testing capabilities to reflect the latest advances in hormone science.

This upgrade includes updated laboratory technology, an optimized panel menu, and a more streamlined testing experience, while maintaining the personalized reports, clinical support, and research-driven standards you expect from ZRT.

Learn more and explore resources: 👉 https://bit.ly/3NjrS3r

12/12/2025

It is easy to assume hormone symptoms tell the whole story, but the details often reveal nuances unique to the individual. ❄️

In November's webinar, Dr. Pamela Smith shared a case where a non-adjustable testosterone pellet led to unexpected symptoms. The patient’s natural levels were already adequate, and the added hormone resulted in acne, agitation, mood instability, and changes in glucose regulation.

The case was a reminder that understanding a patient’s starting point supports safer decisions and helps prevent overtreatment. Individual physiology matters, and thoughtful evaluation leads to more effective care.

You can still watch the full discussion and case review on demand. ▶️
Replay link: https://bit.ly/43g4Srr

12/04/2025

Providers see this all the time: symptoms that do not match what serum levels report. Fatigue, mood changes, sleep issues, cycle changes, hot flashes, and anxiety can all continue even when serum values appear normal.

Saliva testing fills in those gaps and gives providers a clearer picture of what is actually happening in the body.

Here is why:
💧 Saliva measures the bioavailable or active portion of hormones. This is the part your cells can actually use.
🩸 Serum often reflects total hormone levels, which do not always match how a patient feels, especially when binding proteins are high.
🌿 Topical and transdermal hormones behave differently in the body. They often raise tissue levels without changing serum values. Dr. Zava explains this in the podcast and highlights why this matters for HRT monitoring.
🕔 Saliva collections make it easier to capture daily rhythm patterns, especially for cortisol.

Our founder, Dr. David Zava, discusses this and more with Dr. Kenna Stephenson on Episode 61 of the Women Talking Frankly podcast.
🎧 Listen now: https://bit.ly/4p0x6Pg

11/21/2025

When clinical presentations get complicated, testing brings clarity. 🔍

Dr. Pamela Smith reminds us that symptoms often look similar on the surface but the underlying cause matters. Accurate testing doesn’t just guide treatment, it protects patients.✨

▶️ Register and watch the webinar on demand here: https://bit.ly/43g4Srr

11/13/2025

“You’re not imagining it.”

So many women are told their symptoms are “just stress” or “all in their head.” But the truth is often hormonal and measurable.

In this episode of Women Talking Frankly, hosts Kyle McAvoy and Candace Burch talk with Dr. Kenna Stephenson and Dr. David Zava about the science of hormone restoration and the validation women feel when they finally see their results align with how they’ve been feeling all along.

🎧 Listen to the full conversation here: https://bit.ly/4p0x6Pg

11/06/2025

Join internationally recognized physician and author Dr. Pamela W. Smith for a deep dive into some of the most fascinating cases from nearly 50 years of clinical practice.

✅ Hormone-based case histories
✅ Why standard treatment plans don’t always work
✅ New therapeutic approaches for complex patients

Plus, stay for a live Q&A with Dr. Smith!
Register now for the November 20 webinar: 🔗https://bit.ly/42pgLLb

Address

8605 SW Creekside Place
Beaverton, OR
97008

Telephone

+18666001636

Website

https://www.zrtlab.com/

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