Lab records by peptide
GHK-Cu vendors
Vendors that sell GHK-Cu, ranked by what independent labs found in their vials: 980 tests across 148 shops since April 2025. 103 shops graded A or B for GHK-Cu; 29 shops graded D or E.
- 85%of GHK-Cu tests passed; median purity 99.90%
- 41%of vials held more than 5% less GHK-Cu than the label
- Most common failureamount in the vial more than 35% off the label (96 tests). In 11 vials the lab could not confirm it was GHK-Cu at all.
- Last 90 days192 tests from 90 shops, 54 failed. Newest result Oct 12, 2026.
GHK-Cu vendors ranked by lab record
The grade is for GHK-Cu only, not the shop's whole catalog. A shop can pass on one peptide and fail on another. Shops with the same grade are ordered by number of tests.
| Vendor | Grade | Tests | Passed | Median purity | Under-filled | Last test |
|---|---|---|---|---|---|---|
| LiliPeptideLast failure Mar 18, 2026: purity under 99.5% | A | 28 | 27/28 | 99.90% | 23/28 | Sep 15, 2026 |
| Reta-PeptideLast failure May 19, 2026: purity under 99.5% | A | 28 | 27/28 | 99.90% | 5/28 | Sep 15, 2026 |
| Wuhan Wansheng BiotechnologyLast failure Jan 26, 2026: amount in the vial more than 35% off the label | A | 23 | 21/23 | 99.90% | 8/23 | Sep 24, 2026 |
| Heman Peptide HMLast failure Sep 15, 2026: amount in the vial more than 35% off the label | A | 22 | 20/22 | 99.89% | 9/22 | Oct 9, 2026 |
| YimeiNo working storefront found | A | 17 | 16/16 | 99.90% | 12/16 | Aug 21, 2026 |
| Shandong Aishi Biotechnology | A | 16 | 16/16 | 99.90% | 7/16 | Sep 24, 2026 |
| Yiwu Aozuo Trading CoLast failure Sep 15, 2026: the lab could not confirm it was the labelled peptide | A | 16 | 15/16 | 99.90% | 3/15 | Oct 9, 2026 |
| HXNetNo working storefront foundLast failure Feb 18, 2026: amount in the vial more than 35% off the label | A | 13 | 12/13 | 99.90% | 6/13 | Sep 24, 2026 |
| Shanxi Qianyecao Biotech QYCLast failure Sep 25, 2025: purity under 99.5% | A | 13 | 12/13 | 99.90% | 3/13 | Aug 9, 2026 |
| NexaphLast failure Aug 4, 2025: amount in the vial more than 35% off the label | A | 12 | 11/12 | 99.90% | 1/11 | Oct 9, 2026 |
| Shanghai Baoju | A | 12 | 12/12 | 99.90% | 0/12 | Sep 24, 2026 |
| Shanghai Leader Peptide BiotechnologyLast failure Apr 2, 2026: purity under 99.5% | A | 12 | 10/11 | 99.87% | 3/11 | Sep 15, 2026 |
| Lumira | A | 11 | 11/11 | 99.90% | 8/11 | Aug 5, 2026 |
| Shanghai Sigma Audley SSA | A | 11 | 11/11 | 99.93% | 6/11 | May 5, 2026 |
| TSC Top Supplements China | A | 11 | 11/11 | 99.94% | 1/11 | May 6, 2026 |
| Huayi BiotechnologyWebsite homepage returns 404 | A | 9 | 9/9 | 99.90% | 5/9 | Oct 6, 2026 |
| Peptide-S | A | 9 | 8/8 | 99.78% | 4/8 | Feb 22, 2026 |
| Huaian Hanyou Peptide | A | 8 | 8/8 | 99.90% | 5/8 | Aug 9, 2026 |
| HkRoids | A | 7 | 6/6 | 99.79% | 2/6 | Jun 26, 2026 |
| Tianjin Finder Chemical TFC | A | 7 | 7/7 | 99.87% | 3/7 | Sep 17, 2026 |
| Xingtai Jiachuang Technology | A | 7 | 7/7 | 99.90% | 4/7 | Sep 15, 2026 |
| Zenith Jove Peptide ZJ | A | 7 | 7/7 | 99.77% | 0/7 | Jul 22, 2026 |
| Inno Peptides | A | 6 | 6/6 | 99.78% | 3/6 | Aug 9, 2026 |
| Marvel Pep | A | 6 | 6/6 | 99.90% | 2/6 | Oct 1, 2026 |
| Peptide Sciences | A | 6 | 6/6 | 99.83% | 3/6 | Feb 26, 2026 |
| Peptidology | A | 6 | 6/6 | 99.94% | 3/6 | Aug 11, 2025 |
| Shanghai JinBei Chemical Technology | A | 6 | 6/6 | 99.90% | 1/6 | Jun 16, 2026 |
| WllyBIO | A | 6 | 6/6 | 99.91% | 3/6 | Aug 5, 2026 |
| Anlv Biotechnology | A | 5 | 5/5 | 99.90% | 2/5 | Sep 15, 2026 |
| Guangzhou Jeep Biotechnology JEEP | A | 5 | 5/5 | 99.88% | 3/5 | Jul 13, 2026 |
118 more shops with GHK-Cu tests
- Hebei Rimao Technology · 5 tests · grade A
- Suaway Lab Research · 5 tests · grade A
- Top Peptide · 5 tests · grade A
- Zhuoyue Biotechnology · 5 tests · grade A
- Atomik Labz · 4 tests · grade A
- Baoju Chemical · 4 tests · grade A
- Biolongevity Labs · 4 tests · grade A
- Bopeptide Biotechnology · 4 tests · grade A
- Hangzhou Youngpeptide Biotechnology HYB · 4 tests · grade A
- Hunan Ruiwang Technology Center · 4 tests · grade A
- Kerui Peptide HongKong · 4 tests · grade A
- MT Meipept · 4 tests · grade A
- Peptide Pole Hongkong · 4 tests · grade A
- Precision Peptide Co · 4 tests · grade A
- Science · 4 tests · grade A
- Shenzhen Loga Tech LG LOGA · 4 tests · grade A
- Zen Peptides · 4 tests · grade A
- ZhuoYan lab · 4 tests · grade A
- Zztai Peptide · 4 tests · grade A
- Basifu Technology BSF Yoyo Peptide · 3 tests · grade A
- Chimera Peptides · 3 tests · grade A
- Coffee and Peppers · 3 tests · grade A
- Crestpeptide · 3 tests · grade A
- Expert Peptide · 3 tests · grade A
- Flycn Peptide · 3 tests · grade A
- GrayPep · 3 tests · grade A
- Haikou Mingheng Biotechnology · 3 tests · grade A
- Mei Peptide · 3 tests · grade A
- PeptiLab Research · 3 tests · grade A
- Ronghui Hong Kong Biotechnology · 3 tests · grade A
- Suzhou Redgia Biotech RDG · 3 tests · grade A
- Verified Peptides · 3 tests · grade A
- Yabang Peptide · 3 tests · grade A
- Accelerate Labs · 2 tests · grade A
- Aminos Research · 2 tests · grade A
- Champion Peptide · 2 tests · grade A
- Group Buy Kits GBK · 2 tests · grade A
- Nexa Labs · 2 tests · grade A
- Nuscience Peptides · 2 tests · grade A
- Peptronix Bio PTB · 2 tests · grade A
- Pharma Grade Peptides · 2 tests · grade A
- SPB · 2 tests · grade A
- SubQ Scientist · 2 tests · grade A
- Amino Essence · 1 test · grade A
- Peptime · 1 test · grade A
- Peptira · 1 test · grade A
- Wuhan Newtop Biotech · 1 test · grade A
- HK Peptides · 52 tests · grade B
- Qing Li Peptide · 38 tests · grade B
- Tianjin Ruiwang New Material Technology Co · 22 tests · grade B
- ZLZ Peptide · 19 tests · grade B
- Oupeptide · 16 tests · grade B
- Mai Peptide · 15 tests · grade B
- Shanghai ERP peptide Biotechnology · 14 tests · grade B
- Lisa Biopeptide · 11 tests · grade B
- Henan Sahe Peptide · 10 tests · grade B
- Orbitrex Peptides · 8 tests · grade B
- Dankang BioHealth · 7 tests · grade B
- Lipeptides · 7 tests · grade B
- Zhengzhou Lan Yun Cosmetic Trading · 7 tests · grade B
- Hangzhou Mandy Biotechnology · 6 tests · grade B
- LSPL · 6 tests · grade B
- Peptide Partners · 6 tests · grade B
- PeptiSlim · 6 tests · grade B
- ZZQ Peptides · 6 tests · grade B
- BeiBangAn · 5 tests · grade B
- Bulk Peptide Wholesale · 5 tests · grade B
- Cellupep · 5 tests · grade B
- HealthTide Biotech · 5 tests · grade B
- Lotus Bio · 5 tests · grade B
- Shanghai Wibson Biotechnology WBS · 5 tests · grade B
- Simple Peptide · 5 tests · grade B
- SubQ Society · 5 tests · grade B
- ZePeptide · 10 tests · grade C
- Uther · 8 tests · grade C
- EHZ Peptides · 7 tests · grade C
- Xian Yihang Technology · 7 tests · grade C
- Zhejiang Yichenkang Biotechnology · 5 tests · grade C
- Haikou Mingheng Technology · 4 tests · grade C
- Laicuinuo LCN · 4 tests · grade C
- Peptides 4 Research · 4 tests · grade C
- Rethel Jinan New Energy Technology · 4 tests · grade C
- Super Peptides · 4 tests · grade C
- LP Peptide · 11 tests · grade D
- Welon Peptide Solutions · 9 tests · grade D
- Qingdao Sigma Chemical QSC · 6 tests · grade D
- Steady Meds · 6 tests · grade D
- SaiyanMed · 5 tests · grade D
- FSD · 4 tests · grade D
- Nanjing Xiyuxun Technology XYX · 3 tests · grade D
- Peptide Powder Home · 3 tests · grade D
- Rayshine Peptide Biochemicals · 3 tests · grade D
- Shandong Shengyuan Peptide Technology · 3 tests · grade D
- Skye Peptides · 3 tests · grade D
- Yidan Biotech · 3 tests · grade D
- Xingruida XDR · 9 tests · grade E
- SRY Labs · 8 tests · grade E
- Mokemei Zhengzhou Biotechnology MKM · 7 tests · grade E
- Tianjin Eleli Technology Development · 7 tests · grade E
- Polaris Peptides · 5 tests · grade E
- PeptiAtlas · 4 tests · grade E
- Hong Kong Meiliduo Technology Limited · 3 tests · grade E
- NovaPeptide · 3 tests · grade E
- Unicorn Peptide · 3 tests · grade E
- Apex Peptides · 2 tests · grade E
- Bulk Peptide Supply · 2 tests · grade E
- LN Peptides · 2 tests · grade E
- Norco · 2 tests · grade E
- Planet Peptide · 2 tests · grade E
- Pura Peptides · 2 tests · grade E
- Super panda peptide · 2 tests · grade E
- Tianjin TaiHeng Trading · 2 tests · grade E
- Prime Peptides · 5 tests
- ANKR Lab · 2 tests
- Bionexis Peptides · 2 tests
- BioPrecise LLC · 1 test
- Novabio Research · 1 test
- True Signature · 1 test
Recent failed GHK-Cu tests
The newest results that failed, with the reason and the lab's certificate. Check whether your batch number matches before you trust a shop's own paperwork.
- SubQ SocietyOct 6, 2026 · Ichor Life Sciencespurity under 99.5% · purity 98.81% · fill +13.0% · Certificate
- Bulk Peptide WholesaleOct 6, 2026 · BTLabspurity under 99.5% · purity 77.30% · fill -34.0% · Certificate
- Orbitrex PeptidesOct 6, 2026 · Ichor Life Sciencesamount in the vial more than 35% off the label · purity 100.00% · fill +38.0% · Certificate
- PeptiAtlasOct 1, 2026 · Harrens Labpurity under 99.5%; amount in the vial more than 35% off the label · purity 10.00% · fill -90.0% · Certificate
- SRY LabsOct 1, 2026 · Krause Analyticalpurity under 99.5% · purity 99.30% · fill -4.0% · Certificate
- Pura PeptidesSep 29, 2026 · Ichor Life Sciencesamount in the vial more than 35% off the label · purity 99.90% · fill +40.0% · Certificate
GHK-Cu vendors that closed or went offline
Each status is quoted from its source. A shop with no working website may still sell through messaging apps, which is a reason for more caution, not less.
- YimeiNo working storefront found (Finnrick) · last GHK-Cu test Aug 21, 2026
- HXNetNo working storefront found (Finnrick) · last GHK-Cu test Sep 24, 2026
- Huayi BiotechnologyWebsite homepage returns 404 (Our site check) · last GHK-Cu test Oct 6, 2026
- Hebei Rimao TechnologyWebsite domain does not resolve (Our site check) · last GHK-Cu test Apr 23, 2026
- Shenzhen Loga Tech LG LOGAWebsite domain does not resolve (Our site check) · last GHK-Cu test Apr 23, 2026
- ZhuoYan labNo working storefront found (Finnrick) · last GHK-Cu test Jul 23, 2026
- Aminos ResearchNo products for sale (Finnrick) · last GHK-Cu test Apr 26, 2026
- Nexa LabsNo products for sale (Finnrick) · last GHK-Cu test Feb 26, 2026
- Tianjin Ruiwang New Material Technology CoWebsite domain does not resolve (Our site check) · last GHK-Cu test Sep 24, 2026
- Peptide PartnersPayment problems reported (Finnrick) · last GHK-Cu test Sep 9, 2026
- EHZ PeptidesNo working storefront found (Finnrick) · last GHK-Cu test Sep 9, 2026
- FSDNo working storefront found (Finnrick) · last GHK-Cu test Aug 6, 2026
- Xingruida XDRWebsite homepage returns 500 (Our site check) · last GHK-Cu test May 13, 2026
The full list is on closed peptide vendors.
Before you order GHK-Cu
- Look at the shop's grade for GHK-Cu, not its average. HK Peptides has the most GHK-Cu tests (52); a shop with one or two tests has not shown it is consistent.
- 91% of these vials were bought and sent in by customers; the rest were sent by Finnrick or by the shop itself. Results from vials a shop chose to send are the weakest evidence.
- 7 labs tested them, mostly Krause Analytical and BTLabs. Ask for the certificate for your batch and check it on the lab's own site.
- Run the vendor checklist before paying, and read how the grades work.
Research peptides are sold for laboratory use only. This page reports lab results; it is not medical advice.