About us
A peptide supplier that shows its working
We started Celsius in 2014 because buying research peptides was harder than it needed to be. Purity claims with nothing behind them, and certificates you had to ask for twice.
So we do the opposite. Test every batch, publish the result against its batch number, keep everything cold, and get it out the door the same day.
See how we test
What we care about
Tested, not just claimed
Every batch is tested and the certificate goes online before your order ships.
Kept cold
Stored at −20 °C and shipped insulated, so it arrives in the condition it left in.
Out the same day
Order by 3pm on a working day and it goes out that afternoon.
Clear about what we sell
Laboratory reagents for research. No therapeutic claims, no dosing advice, ever.
Looking for something we don’t stock?
We take custom synthesis enquiries. Tell us the sequence, the amount and the purity you need and we will come back with a price.