Stress Test
Understand Your Stress—Throughout the Day
Restore balance. Feel more in control. Show up at your best.
The SparkDX Stress Test helps you understand how stress is showing up in your body by measuring your natural cortisol rhythm—so you can take smarter steps toward balance and recovery.
No blood. No needles. Just results.
Understand your stress and cortisol rhythm
See how stress shows up in your body throughout the day by tracking your natural cortisol levels—so you can better support your energy, sleep, and recovery.
Simple, at-home stress testing
No blood. No needles. Just a quick, non-invasive saliva test you can do from home—designed to fit seamlessly into your daily routine.
Personalized insights to feel your best
Turn your results into clear, actionable insights that help you build better habits, improve balance, and take control of your stress over time.
Choose Your Purchase Type
Single Purchase
$24.99
One Time Purchase includes 4 tests
Monthly Subscription
$19.99
Your monthly subscription includes X tests & free shipping
Free standard shipping on orders $50+
Free shipping on subscriptions
Secure CheckoutCortisol & Your Daily Rhythm
Why it matters: Your cortisol rhythm impacts how you feel, focus, and recover throughout the day.
Cortisol is your body’s primary stress hormone. It plays a key role in regulating energy, focus, metabolism, and recovery throughout the day.
Healthy cortisol follows a natural daily rhythm—rising in the morning to help you feel alert and ready, then gradually declining in the evening so your body can rest and recover.
By measuring cortisol at two key points in the day, the SparkDX Stress Test helps you understand how your body is responding to daily stress—and whether your natural rhythm is in balance.
So you can restore balance, improve energy, and feel more in control of your day.
Spark is changing thousands of lives
“Works like magic and the results are too quick!”
“Was hesitant but it worked really well”
“Works like magic and the results are too quick!”
“Was hesitant but it worked really well”
Customer Reviews
We're all about transparency. Read reviews by real people who use STIM Spark.
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Urvashi L
November 16, 2025
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat
Urvashi L
November 16, 2025
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat
Urvashi L
November 16, 2025
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat
Urvashi L
November 16, 2025
Benefits of Regular Testing
Why Testing Regularly Matters
One result is a snapshot. Patterns over time reveal more about your body.
Make Smarter Daily Decisions
Use personalized insights to better understand your body day to day.
Personalized Insights from Your Trends
Your data becomes clearer, more meaningful, and more actionable over time.
Why Testing Regularly Matters
One result is a snapshot. Patterns over time reveal more about your body.
Make Smarter Daily Decisions
Use personalized insights to better understand your body day to day.
Personalized Insights from Your Trends
Your data becomes clearer, more meaningful, and more actionable over time.
