EVERYTHING IN ONE KIT.
"I used to carry three different things in my bag. Now it's just DEFENT. One device, one process, done."
— Jasmine R.
JOIN THE MOVEMENT TO SAVE LIVES
ONE All-in-One Safety Detection Device
Single-Use Device
DEFENT ONE: The World's First Fentanyl Detection Device
A breakthrough in fentanyl detection you can hold in your hand.
- Secure testing chamber for accuracy and precision
- Pocket-sized and built to go anywhere
- Measured scoop + clean water reagent for near-zero error
- Home or on the go protection, ready when you are
Each Kit Includes:
- 1x DEFENT ONE single-use device
- 1x Crush Bag
- Quick Start Guide
Note: DEFENT ONE is a single-use device and is only intended to help inform about the potential presence of fentanyl. DEFENT ONE does not determine if a substance is safe to use. Please follow user instructions for the most accurate results. Manufactured in an ISO13485 facility.
In stock — ships within 1–2 business days
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Join Thousands Who DEFENT
NO EXTRA STEPS, NO EXTRA STUFF.
"It has everything you need built in. I didn't have to buy anything else or figure anything out."
— Devon K.
ONE DEVICE COVERS IT.
"It lives in my bag and handles everything I need. Simple, complete, always with me."
— Priya S.
MY FIRST TIME TOOK TWO MINUTES TO LEARN.
"I was nervous I'd mess it up. The instructions walked me through it and I had my result three minutes later."
— Tyler M.
EASIER THAN A PREGNANCY TEST.
"Honestly, that's the best comparison I can make. If you can follow three steps, result shows up pretty quickly."
— Alexis B.
NO GUESSWORK ANYWHERE.
"Clear steps, clear result. Even at 1am in bad lighting, I knew exactly what I was looking at."
— Sam O.
I STILL RESPECT STRIPS. I JUST TRUST THIS MORE.
"Strips got me into testing in the first place. DEFENT gave me a result I didn't have to squint at or second-guess."
— Jordan L.
NO MORE READING FAINT LINES.
"With strips I was always asking friends 'is that one line or two?' With DEFENT the answer is just there."
— Casey V.
UPGRADED FROM STRIPS, NEVER LOOKED BACK.
"Strips work, but DEFENT made it way easier, faster and way less stressful. Three minutes and I'm sure."
— Nina F.
BATHROOM STALL...THREE MINUTES, DONE.
"No lab, no setup, no counter space needed. I tested at a festival in a porta potty. If it works there, it works anywhere."
— Renee C.
GOES WHERE I GO.
"Fits in my pocket next to my phone. Concerts, hotel rooms, a friend's place. I DEFENT wherever I am."
— Marcus J.
TESTED IN THE CAR BEFORE WE WALKED IN.
"Dark parking lot, no problem. Three minutes in the car and we had our answer before the night started."
— Tim F.
I BOUGHT 5 AND GAVE 3 AWAY.
"This isn't just a product for me. Everyone I care about tries to test now. That's how this changes."
— Andre P.
TESTING IS JUST WHAT WE DO NOW.
"In my friend group, DEFENT is a verb. Nobody thinks twice about it anymore, and that's the whole point."
— Kayla D.
WE LOOK OUT FOR EACH OTHER.
"It started with one device at one party. Now half the people I know carry one. This is bigger than me."
— Luis G.
