As seen in

4.7

Instant Cortisol Test

See your morning cortisol

After you wake up, cortisol naturally rises, helping you feel awake and alert.

Understand your evenings

Cortisol should drop before bed. 
If it doesn’t, disrupted sleep can follow.

Map your full cortisol rhythm

See how your morning and evening levels work together to shape your sleep.

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FSA/HSA Eligible with Burst Learn more

FSA/HSA eligible with Burst

This product may be eligible for purchase with your FSA/HSA funds. Get up to 100% reimbursed using your pre-tax dollars with Burst.

  1. 1

    Purchase with your regular payment method

    Use your credit card, debit card, or other payment method at checkout.

  2. 2

    Get a Letter of Medical Necessity

    After checkout, fill out a brief health questionnaire for our licensed providers to review.

  3. 3

    Receive automatic reimbursement

    If approved, Burst will automatically reimburse you from your FSA/HSA account.

Test anytime, anywhere

Collect your saliva

Hold the test in your mouth for 1 minute.

Scan with the Eli app

Your iPhone reads the developed test, 
no extra hardware needed.

View results in the Eli app

Your morning and evening levels can reveal whether your cortisol rhythm is in sync, or working against your sleep.

Your cortisol rhythm shapes 
your sleep cycle.

Morning

Cortisol peaks after waking, shaping your energy and alertness as your day begins.

Evening

Cortisol should fall before bedtime, a natural wind-down signal. If it stays elevated, falling asleep is difficult.

Your full rhythm

Your cortisol pattern is linked to your energy, alertness, and sleep. Track it to see if it’s working against you at night.

5.0

Knowing how my cortisol levels have been spiking at night has helped me adjust my lifestyle and make changes to drop my levels at night (like they should be) and help me loose the weight I've been battling to loose.

Adam A., Verified Buyer

5.0

Eli's cortisol tests are a game changer. They are super easy to use, and the UI in the app is well designed. It's helping me figure out what's triggering cortisol spikes and leading to me getting better sleep!

Jason B., Verified Buyer

5.0

These really helped me get an idea of my natural circadian rhythm. It was much more useful than going to my doctor who charged $400 for 1 test.

UltraGeek1111, Verified Buyer

Expert-led, from research to results.

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.

Fady Hannah-Shmouni, MD

Endocrinologist and geneticist at the University of British Columbia.

Focus: Longevity healthcare.

FAQ

4.7

What Eli users are saying

RESOURCES

Here’s what you need to know.

RESOURCES

Here’s what
you need to know.

PRODUCT GUIDE

Cortisol Hormometer™ 101: The Ultimate Guide

CORTISOL EXPLAINED

What your evening cortisol test results mean

Cortisol Explained

What your morning cortisol test results mean