OneNeg is a global family of O‑negative donors — the universal lifeline — always ready to help in an emergency, anytime, anywhere in the world.
Be one of the first O− donors to join — every member makes the family stronger, anywhere in the world.
Whether you need blood or you're ready to give it, OneNeg connects the right people in minutes — not hours.
Tell us the patient, hospital and units needed — takes 30 seconds.
Every eligible O− donor nearby is notified instantly.
They confirm, and you see exactly who's coming and when.
The donor reaches the hospital and the help arrives.
Create your donor profile and confirm you're O−.
We verify your blood group so requesters can trust you.
Turn on location & alerts. We only ping you when it counts.
When someone needs you, tap accept — and be someone's miracle.
O− blood can be given to anyone, of any blood type — which is why hospitals reach for it first in an emergency, when there's no time to test. But only a small fraction of people have it, so when it runs out, every minute matters.
That's the gap OneNeg closes: a standing community of O− donors who can show up fast, exactly when and where they're needed.
of people are O‑negative — yet it's the most-requested blood in trauma care.
blood types can safely receive O−. It's the true universal donor.
between whole‑blood donations — so a wide network keeps someone always ready.
donation can help save up to three lives. One tap, three families.
No phone trees. No frantic WhatsApp forwards. Open the app, tap Help, and the nearest ready donors are alerted in real time.
2 units of O‑negative needed for emergency surgery.
5 June 2026 · the day OneNeg beganOne afternoon, a colleague needed O‑negative blood and the hospital had none. I'm O−, so I said “let's go” and donated. Sipping a juice afterwards, it hit me: there should be a way for any of us — anywhere in the world — to show up like that, instantly. A family of rare‑blood donors who answer the call. That's OneNeg.
Every donor's blood group is verified, so requesters can trust who shows up.
Real‑time notifications reach nearby donors the moment a request goes live.
We alert the closest donors so help can reach the hospital fast.
Your contact details stay hidden until you decide to help. Always your call.
Asking for help should never come with a price tag. Requesting blood and joining the community will always be 100% free — no fees, no ads, no selling your data. Ever.
To get started, our founder personally covers the running costs. As we grow, small voluntary donations from the people we've helped keep OneNeg alive — so it stays free for the next family in an emergency.
It takes two minutes to register and a lifetime of meaning. Join the O− community that shows up when it matters most.
We'll alert nearby O− donors instantly.
One community that shows up for each other.