As seen in
Instant Cortisol Test
Measures free cortisol to reveal the impact of mental, physical, lifestyle, and environmental stress on your body.
20 minutes
Saliva
Third-party tested
Free shipping always with your subscription
Pause or cancel anytime
Free expert onboarding call with your subscription
Track the hormone driving your recovery, sleep, and energy.
You can feel when work stress, poor sleep, or travel throw you off—but you've never been able to measure how much.
Collect a saliva sample, scan it with the Eli app, and see your cortisol level in minutes. Anytime, anywhere.
The world's first instant cortisol test.
We made the cortisol test instant. By capturing free cortisol, the active fraction in your saliva, the moment it appears, Eli lets you read your cortisol where it matters most: in your everyday routine.
No blood, no needles
Convenient testing anytime, anywhere
97% accuracy
As benchmarked against laboratory reference methods.
Cortisol Hormometer™ is a wellness product and is not a substitute for laboratory or clinical testing.
Multi patent-pending tech
Lateral flow assay+ microfluidic cartridge innovation
One data point is not an answer.
A morning cortisol reading shows where your day started—but it leaves out whether you crashed by noon, spiked at 3pm with that coffee, or stayed wired at night.
Your full cortisol rhythm drives how you feel and it's invisible without continuous testing.
Dive deeper into your body's master stress signal.
Cortisol diurnal RHYTHM
Track your real-time cortisol pattern.
STRESS STATUS
Identify what drives your stress.
RHYTHM TRENDS
See what moves your cortisol rhythm.
PERSONALIZED INSIGHTS
Test what helps you feel your best.
Dive deeper into your body's master stress signal.
Cortisol is dynamic.
Your test should be, too.
Your full daily pattern
High after you wake up, low by evening. These two points anchor your cortisol rhythm—and it shifts more than you'd expect.
Hard weeks change your rhythm
Poor sleep, a tough training block, a stressful stretch. These factors quietly shift your rhythm, so what looked normal last month may not be today.
Regular testing gives you visibility
Your rhythm can change before you feel it. Checking your cortisol regularly helps you understand what affects your it and what habits bring it back to baseline.
I was able to monitor my cortisol and see what affects it. For example overtime, I realized that my mindfulness routine was bringing my cortisol back into range.
Maya, Verified Buyer
It’s so helpful to know in 20 minutes if what you’re feeling and your cortisol levels are connected and how to work toward balance.
Katie, Verified Buyer
With Eli Hormometer I can easily see what my cortisol level is and how the things I do affect it in realtime. It’s so incredibly easy to use!
Mara, Verified Buyer
Thousands have tried Eli. Here's what they're saying.
Eli made the list
Best Health + Wellness Desing of 2025
“This is a game-changer, cortisol is the most illusive hormone. A reliable home kit is a life-saver for anyone struggling.”
Roman
“When people actually see the data, it's clear feedback that enables them to prioritize different actions.”
Stress is measurable, I track mine with Eli.
Meaghan
“The advantage of this [Eli's] type of test is that it doesn't require another party and can turn around results more quickly.”
“ I was able to track my typical cortisol levels and am now experimenting to see what I can do to improve my levels. I will be ordering an additional pack soon. ”
George B
“I finally understand how my body responds to stress throughout the day. I can see patterns I never had access to before.”
Maya
Expert-led, from research to results.
Fady Hannah-Shmouni, MD
Endocrinologist and geneticist at the University of British Columbia.
Focus: Longevity healthcare.
Alicia Robbins, MD
Board-certified OBGYN and Certified Menopause Practitioner.
Focus: Midlife transitions healthcare.
Olivia Lesslar, MD
Physician and lecturer working across brain health, trauma, and recovery.
Focus: Integrative longevity healthcare.
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.
PRODUCT GUIDE
Cortisol Hormometer™ 101: The Ultimate Guide
CORTISOL EXPLAINED
Why your cortisol reading might look different than expected
PRODUCT GUIDE
When to Test Cortisol