984 published test results across 148 vendors · latest: 12 Oct 2026
| # | Vendor | Tests | Price/mg | Score |
|---|---|---|---|---|
| 1 | SShandong Aishi Biotechnology Unverified | 16 | $0.07 | 95 |
| 2 | YYimei Unverified | 17 | $0.10 | 94 |
| 3 | LLiliPeptide Unverified | 28 | $0.06 | 94 |
| 4 | RReta-Peptide | 28 | $0.06 | 94 |
| 5 | LLumira Unverified | 12 | $0.10 | 94 |
| 6 | SShanghai Baoju Unverified | 12 | $0.06 | 93 |
| 7 | TTSC Top Supplements China Unverified | 11 | — | 92 |
| 8 | SShanghai Sigma Audley SSA Unverified | 11 | $0.15 | 92 |
| 9 | HHuayi Biotechnology Unverified | 9 | $0.06 | 92 |
| 10 | HHuaian Hanyou Peptide Unverified | 8 | $0.06 | 91 |
Computed from publicly published third-party results. How scoring works · every listing is free and un-buyable. Vendors marked Unverified appear for their published results but are left out of the vendor rankings.
GHK-Cu is a naturally occurring copper-binding tripeptide with a genuine cosmetic-science literature behind topical use for skin appearance. The injectable use sold in this market extrapolates far past what that evidence covers.
GHK-Cu is the best-value verified compound in our entire index. The top five vendors score 94 to 96, each on records of 11 to 26 published tests, at $0.05 to $0.10 per milligram, with results as fresh as August 2026. No other compound we track combines scores that high with prices that low. The reason is chemistry: a three-amino-acid peptide is about as easy as synthesis gets, and the same factories supplying the cosmetics industry supply this market, so quality is high and margins are thin. The practical upshot: with 100 tracked vendors, there is no reason to buy GHK-Cu from anyone without a published, recent, verifiable batch record.
The tripeptide was first isolated from human plasma in the 1970s, and the literature that followed is mostly about topical application: skin appearance, wound models, cosmetic formulations. Injectable use has no comparable evidence base. A 96 score here means the vial contains what the label claims. It says nothing about whether injecting it does what a forum post promises.
No. It appears as an ingredient in topical cosmetics, which are regulated as cosmetics, not medicines. Injectable GHK-Cu is a research chemical with no approved use anywhere.
It is a simple tripeptide manufactured at cosmetic-industry scale. At $0.05 to $0.10 per milligram from top-scored vendors, a price meaningfully above that range is paying for branding, not purity.
No. The score verifies label accuracy against published third-party testing. Safety and efficacy of injection are separate questions no COA can answer.
Nothing on this page is medical advice; compounds shown are sold for research purposes only. Data is aggregated from publicly published third-party results and traces to its source.