As seen in
Instant Cortisol Test
Track how your cortisol impacts your sleep, mood, weight, energy, and more.
Simple saliva sample—no needles
97% test accuracy*
Results on your phone in 20 minutes
*Benchmarked against laboratory method references. Hormometer™ is a wellness device and is not intended to diagnose, treat, or manage any medical condition.
Why cortisol matters.
Cortisol is the stress hormone released by your adrenal glands. It impacts your body each day by regulating your stress response, supporting sleep + wake cues, and managing blood sugar and metabolism.
Your cortisol rhythm should peak in the morning to mobilize energy, and fall by night to help your body prepare for sleep.

Cortisol myths
High cortisol is always bad.
Cortisol should be high in the morning: it peaks to help you wake up and feel alert. Cortisol that remains high into the afternoon and evening is worth watching.
Cortisol only rises under stress.
Regardless of stress, cortisol releases on a regular schedule, known as your cortisol diurnal rhythm.
Measuring cortisol once is enough.
One reading shows one moment in time. Tracking regularly allows you to see how your full daily rhythm moves.
Your rhythm impacts your health every day.
Optimal rhythm

What happens
Sharp morning peak, gradual decline throughout the day.
what you might notice
Elevated rhythm

What happens
Normal morning peak that remains elevated throughout the day.
what you might notice
Flat rhythm

What happens
Muted morning peak that doesn’t rise throughout the day.
what you might notice
Inverted rhythm

What happens
Blunted morning response that climbs until it peaks at night.
what you might notice
How Eli helps users navigate their health.
Meaghan Praznik
Ironman competitor

“Easy to use tests and I exported the data and shared with my doctor as part of my health care plan.”
Lee L.
Verified customer
“Thanks to Eli, I gained a better understanding of my cortisol and what may be contributing to spikes. The valuable insights helped me have a more informed conversation with my doctor. Having access to this information has given me greater confidence in managing my health.”
Gabriella
Verified customer
The most awarded cortisol test.

CES 2025
Best of innovation

Fast Company
Best Health + Wellness Design 2025

Canyon Ranch
Wellness Gold List 2026

Shape
Best Cortisol Testing App

HLTH 2025
Best of innovation

Wareable 2025
Wearable Digital Health

Digital Health 2025
Digital Health Awards
Skip the wait: results in minutes.


step 01
Collect your saliva.
Saliva contains dozens of unbound hormones including cortisol.


step 02
Scan in your test.
The Eli app uses AI computer vision to analyze your test.


step 03
Visualize your data.
See what moves your cortisol rhythm and get personalized tips on how to improve it.
Your cortisol rhythm, explained.
The Eli difference.
Dr. Fady Hannah-Shmouni, MD, DABIM, AHSCP, FRCPC
Eli Health Medical Director: leader in endocrinology and longevity medicine for 15 years.
Internal Medicine, Endocrinology & Genetics · Longevity Docs member
Test at your own pace.
3 months
24 tests • $11.50 per test
Enough to map your baseline rhythm and test one change
Covers one season or one training block
Free shipping every 3 months
Pause, skip, or cancel anytime
Choose this if you're new to tracking your cortisol.
6 months
48 tests • $10.08 per test — 12% less
Twice the data, at the lowest per-test price
Long enough to see seasonal shifts, multiple training blocks and several cycles
Free shipping every 6 months
Pause, skip, or cancel anytime
Choose this if you're ready to track your cortisol regularly.
We stand behind every test.
Test replacement guarantee. If your test doesn't produce a readable result, we'll replace it.
Free onboarding call with an Eli team member to read your first rhythm.
Pause, adjust, or cancel at anytime. Complete control of your plan.
Proudly built in North America.
10,000+
Hormone-curious users tracking their cortisol with Eli.
250,000+
Tests manufactured in-house in North America.








Eli helps you identify the pattern.
With labs, not instead of:
Hormometer™ is a wellness device that tracks your cortisol rhythm. It doesn’t replace clinical testing ordered by your physician, but regular readings from Eli can complement your labs.
Free cortisol, not serum
Eli measures free cortisol, the active portion available to your tissues. Serum tests measure bound cortisol in blood.
Understand how cortisol impacts your:
Hormometer™ is a wellness device built to show you your cortisol rhythm—not to replace clinical lab testing. If you're managing a condition, Eli can sit alongside testing ordered by your physician.

Performance

SLEEP

Metabolic health

Hormonal changes

Recovery

Focus + energy
4.7
What Eli users are saying
Customer reviews reflect individual experiences with wellness tracking. The Hormometer™ is not intended to diagnose, treat, or screen for any medical condition.







