GO PEPS

Research grade · COA verified

Peptides you can actually verify.

Semaglutide, tirzepatide and retatrutide at 99%+ purity. Every vial ships with a lot number that resolves to its own certificate of analysis.

Flacon Retatrutide 10 mg GO PEPS, 99,42 % de purete, lot RETA-2604A

The catalogue

Three peptides,
in stock today.

Sold as lyophilized powder, by weight of peptide.

Buy more, pay less per vial.

Lot verification

Read the certificate
before you buy.

A certificate that is not tied to a lot number proves nothing. Type the lot printed on any vial and read the report the outside laboratory issued for that exact batch. No account needed.

On file

Compare

One receptor,
two, or three.

  1. 1 Wilding JPH et al. N Engl J Med 2021;384:989. STEP 1, week 68.
  2. 2 Jastreboff AM et al. N Engl J Med 2022;387:205. SURMOUNT-1, 15 mg arm, week 72.
  3. 3 Jastreboff AM et al. N Engl J Med 2023;389:514. Phase 2, 12 mg arm, week 48. Lilly reported 28.3% at week 80 in TRIUMPH-1.

Published results for the reference pharmaceutical products, reported as literature. Not claims about the research material sold here, which is supplied for laboratory use only.

Reviews

What buyers say
after the first order.

out of 5 · verified orders

FAQ

Asked before
the first order.

What exactly am I buying?

A sealed glass vial of lyophilized peptide powder, labelled by the weight of peptide it contains, with a lot number printed on it. No water, no syringe, no needle. Supplied for in vitro laboratory research only. Not a medicine, not for human or veterinary use, and nothing here is medical advice.

Why milligrams and not millilitres?

Because the vial holds dry powder, not liquid. Milligrams describe how much peptide is actually in there. Millilitres describe how much water you add later, which is your call. A 10 mg vial reconstituted with 1 mL and the same vial with 5 mL hold identical peptide at very different concentrations. Anyone selling peptide by the millilitre is telling you something about themselves.

How do the volume discounts work?

The unit price drops as the quantity goes up: . The discount shows in the price before you add anything to the cart, and it applies per line.

How do I know the certificate is real?

Two ways, and you should use both. The lot number on your vial must resolve in our lot lookup, and the molecule, size and date must match your order. Then, because the report names the laboratory that issued it, take the same lot number to that laboratory's own records and confirm it without us. A certificate from an unnamed lab, or one covering "our peptides" rather than one production run, is marketing.

What does 99% purity miss?

Three things. Identity, because a pure trace of the wrong molecule still reads 99%. Endotoxin, because bacterial residue does not appear on a purity chromatogram at all. Fill weight, because purity is a percentage of whatever is in the vial and says nothing about how much is in there. All three are on every certificate we publish.

Shipping and storage?

Orders placed before 2 PM CT ship the same business day from the United States, in a plain outer box with no branding and no product name on the label. Delivery is typically 2 to 3 business days by USPS Priority Mail. Store sealed vials at −20 °C, protected from light. Once reconstituted, 2–8 °C.

Which payment methods?

Visa, Mastercard and American Express, Apple Pay, and cryptocurrency. Crypto orders take 10% off because the processing costs us less and we would rather pass that on.

What is the legal position?

These materials are sold as research chemicals for laboratory use, not as drugs. Retatrutide is investigational and has no approved human form anywhere. Semaglutide and tirzepatide exist as approved prescription medicines under other brands, and what we supply is neither those products nor a substitute for them. By ordering you confirm you are a qualified buyer purchasing for laboratory research and that you are responsible for compliance where you are.

Get the restock alerts.

One email when a new lot is released with its certificate, one when something is back in stock. Nothing else.