Updated weekly · last check October 19, 2026

Peptide Price Index

What research peptides cost right now at 125 US vendors, ranked by price per milligram and re-checked every week, with which vendors publish lab reports (COAs).

Peptides tracked
26
Prices checked
1,438
Vendors
125
Deals this week
12
Live price boardLowest price per mg vs the median
All 26 peptides →Re-checked every week

Deals this week

All deals

Sales, price drops since last week and our discount codes, biggest saving first. Refreshed with every weekly check.

Prices by peptide

The three cheapest vendors for each peptide by price per mg (single vials in stock), grouped by category. Open a peptide for every vendor's price.

Need a specific amount?Compare total cost across vendors →

How we check prices

  1. Read from the vendor's site. We open each product page and record the listed price, the amount per vial and whether it is in stock. No vendor sends us prices.
  2. Compare per milligram. Price divided by milligrams, so different vial sizes compare fairly. The median Retatrutide offer is $5.97 per mg right now.
  3. Show the proof. The COA badge means the vendor publishes certificates of analysis (lab reports) on its own site; check there for the exact product and lot. Vendor scores come from our published method.
  4. Re-check weekly. Each check is saved, so every product shows its change since last week and each peptide has a price history.

Research use only. The compounds referenced on this page are sold for laboratory research purposes only. They are not drugs, foods, cosmetics or dietary supplements, and they are not approved by the FDA for human or veterinary use. Nothing on this page is medical advice. PeptideChecked does not sell peptides, does not provide dosing guidance, and does not recommend the use of any compound in humans.

FAQ

Peptide price questions

How are peptide prices ranked?

By price per milligram: the vial price divided by the amount it contains, so a 10 mg vial and a 5 mg vial compare fairly. Each vendor's cheapest in-stock single vial is used (multi-vial kits are left out), and out-of-stock items go to the bottom. Sponsorship never changes the order.

How often are prices updated?

Every week. We re-check each tracked product on the vendor's own site and record the price, so every product shows its change since last week. Last check: October 19, 2026.

Does the cheapest vendor mean the best vendor?

No. Price is one factor. Check the COA badge (whether the vendor publishes lab reports for its products) and the vendor score, which reflects testing evidence, independent test data and transparency.

Are discount codes included in the price?

The ranked price is the vendor's own list price. Where we have a discount code, the price after the code is shown under the button, and the deals list counts it.