Compare peptide purity across brands using real third-party lab tests from Peptigrity — with the test spread (not just an average) and net peptide content (how many mg are actually in the vial), both computed from the lab database. Built on independent tests: no test can be paid for, hidden, or removed.
| Brand / shop | Avg HPLC purity | Spread | Net content | Last tested | |
|---|---|---|---|---|---|
| Vantyx Research1 test only | 99.97%Excellent | 1 test99.97% | 105%of label | Mar 9, 2026 | View → |
| Power Peptides1 test only | 99.95%Excellent | 1 test99.95% | 94%of label | Nov 21, 2024 | View → |
| Evolabs Research | 99.95%Excellent | 4 tests99.93–99.98% | 115%of label | Mar 31, 2026 | View → |
| Simple Peptide | 99.94%Excellent | 7 tests99.91–99.96% | 124%of label | Sep 25, 2025 | View → |
| Coastal Peptides1 test only | 99.94%Excellent | 1 test99.94% | 106%of label | Feb 17, 2026 | View → |
| Peptide Pro Shop1 test only | 99.94%Excellent | 1 test99.94% | 101%of label | Dec 8, 2025 | View → |
| Vylix Research | 99.94%Excellent | 2 tests99.91–99.96% | 116%of label | Apr 21, 2026 | View → |
| semathin1 test only | 99.93%Excellent | 1 test99.93% | 120%of label | Aug 15, 2025 | View → |
| PeptidePlugs | 99.93%Excellent | 5 tests99.87–99.97% | 107%of label | Apr 12, 2026 | View → |
| Prosperity Peptides | 99.93%Excellent | 2 tests99.93–99.93% | 126%of label | Feb 21, 2026 | View → |
| Trulab Peptides1 test only | 99.93%Excellent | 1 test99.93% | 127%of label | Jun 18, 2026 | View → |
| Rescue Research USA | 99.93%Excellent | 4 tests99.91–99.96% | 125%of label | May 17, 2026 | View → |
| Riptide Wellness | 99.93%Excellent | 2 tests99.9–99.96% | 102%of label | Mar 18, 2026 | View → |
| ThreeSide Peptides | 99.92%Excellent | 5 tests99.84–99.95% | 102%of label | Feb 18, 2026 | View → |
| AMINOVA Research Supply | 99.92%Excellent | 2 tests99.91–99.93% | 114%of label | Mar 26, 2026 | View → |
| Ascension Peptides | 99.91%Excellent | 2 tests99.88–99.94% | 117%of label | Jan 28, 2026 | View → |
| Simple Peptides | 99.9%Excellent | 2 tests99.9–99.91% | 120%of label | Sep 25, 2025 | View → |
| LuvionBio | 99.9%Excellent | 2 tests99.9–99.91% | 110%of label | Mar 22, 2026 | View → |
| Regenerative Research | 99.9%Excellent | 7 tests99.75–99.95% | 110%of label | Mar 2, 2026 | View → |
| Omega Peptides1 test only | 99.9%Excellent | 1 test99.9% | 109%of label | Mar 16, 2026 | View → |
| VRIL Peptides1 test only | 99.89%Excellent | 1 test99.89% | 106%of label | Mar 27, 2026 | View → |
| Vera Peptides | 99.89%Excellent | 2 tests99.84–99.94% | 110%of label | Apr 7, 2026 | View → |
| IRON Peptides | 99.89%Excellent | 3 tests99.84–99.95% | 108%of label | Jan 15, 2026 | View → |
| NeuroLabs Research1 test only | 99.88%Excellent | 1 test99.88% | 97%of label | Jan 24, 2026 | View → |
| Panda Peptides1 test only | 99.88%Excellent | 1 test99.88% | 117%of label | May 6, 2026 | View → |
| biopeptitech.com | 99.88%Excellent | 4 tests99.75–99.96% | 106%of label | Mar 12, 2026 | View → |
| americanpeptides.us | 99.88%Excellent | 5 tests99.8–99.9% | 102%of label | Jul 7, 2026 | View → |
| Chameleon Peptides1 test only | 99.87%Excellent | 1 test99.87% | 117%of label | May 6, 2026 | View → |
| Research Peptides Lab | 99.87%Excellent | 4 tests99.72–99.97% | 100%of label | Jan 1, 2025 | View → |
| DS Research Peptides1 test only | 99.87%Excellent | 1 test99.87% | 109%of label | Mar 31, 2026 | View → |
| Peptide Pro Canada | 99.87%Excellent | 3 tests99.82–99.94% | 110%of label | Apr 10, 2026 | View → |
| Amino Club | 99.86%Excellent | 2 tests99.79–99.93% | 107%of label | Feb 7, 2026 | View → |
| mspeptides.com | 99.86%Excellent | 8 tests99.66–99.97% | 115%of label | Jun 24, 2026 | View → |
| ezpeps.com | 99.86%Excellent | 12 tests99.79–99.92% | 111%of label | Jun 9, 2026 | View → |
| Real Peptides1 test only | 99.85%Excellent | 1 test99.85% | 117%of label | Mar 5, 2026 | View → |
| Crush Research Supply | 99.85%Excellent | 12 tests99.61–99.96% | 114%of label | Apr 4, 2026 | View → |
| Orbitrex Peptides | 99.85%Excellent | 11 tests99.69–99.96% | 111%of label | May 9, 2026 | View → |
| Instant Peptides | 99.85%Excellent | 4 tests99.69–99.93% | 112%of label | May 17, 2026 | View → |
| Alpha Peptides | 99.85%Excellent | 5 tests99.67–99.97% | 114%of label | May 26, 2026 | View → |
| Peptide Supply Co | 99.84%Excellent | 6 tests99.59–99.95% | 108%of label | Mar 19, 2026 | View → |
| KÖLD | 99.84%Excellent | 3 tests99.59–100% | 101%of label | Mar 6, 2026 | View → |
| badgercompounds.com1 test only | 99.84%Excellent | 1 test99.84% | 117%of label | May 11, 2026 | View → |
| Thrive Peptides | 99.83%Excellent | 8 tests99.66–99.95% | 112%of label | Mar 25, 2026 | View → |
| IonPeptide | 99.83%Excellent | 25 tests99.62–99.98% | 108%of label | Mar 18, 2026 | View → |
| Valor Peptides | 99.83%Excellent | 11 tests99.52–100% | 112%of label | Apr 21, 2026 | View → |
| Elite Research USA | 99.83%Excellent | 3 tests99.61–99.94% | 116%of label | Apr 14, 2026 | View → |
| Blank Peptides | 99.83%Excellent | 6 tests99.48–99.96% | 108%of label | May 19, 2026 | View → |
| Humatide LLC1 test only | 99.83%Excellent | 1 test99.83% | 107%of label | Jun 27, 2026 | View → |
| lapeptides.net | 99.83%Excellent | 11 tests99.61–99.9% | 105%of label | Jun 15, 2026 | View → |
| Prime Lab Peptides | 99.82%Excellent | 3 tests99.63–99.96% | 128%of label | Feb 3, 2026 | View → |
| Primal Peptides | 99.82%Excellent | 2 tests99.75–99.88% | 116%of label | Jan 6, 2026 | View → |
| OROS Research | 99.82%Excellent | 3 tests99.72–99.96% | 121%of label | Oct 4, 2025 | View → |
| Trusted Peptides1 test only | 99.82%Excellent | 1 test99.82% | 140%of label | Feb 3, 2026 | View → |
| NuRev Peptides | 99.82%Excellent | 3 tests99.78–99.84% | 126%of label | Feb 22, 2026 | View → |
| Felix Chemical Supply | 99.82%Excellent | 22 tests99.47–99.99% | 107%of label | Mar 5, 2026 | View → |
| Peptidex1 test only | 99.82%Excellent | 1 test99.82% | 100%of label | Jan 22, 2026 | View → |
| Lumin Research1 test only | 99.82%Excellent | 1 test99.82% | 94%of label | Jan 6, 2026 | View → |
| Protide Health | 99.82%Excellent | 14 tests99.43–99.95% | 118%of label | May 30, 2026 | View → |
| modernresearchpeptides.net | 99.82%Excellent | 7 tests99.66–99.93% | 111%of label | Jun 24, 2026 | View → |
| Optima Supply1 test only | 99.81%Excellent | 1 test99.81% | 111%of label | Jul 22, 2025 | View → |
| Humatide1 test only | 99.81%Excellent | 1 test99.81% | 105%of label | Jun 27, 2026 | View → |
| Certified Peptides | 99.8%Excellent | 3 tests99.8–99.8% | 106%of label | Feb 23, 2026 | View → |
| Mile High Compounds1 test only | 99.8%Excellent | 1 test99.8% | 107%of label | Mar 9, 2026 | View → |
| Particle Peptides | 99.8%Excellent | 3 tests99.8–99.8% | 96%of label | Mar 26, 2026 | View → |
| Empower Peptides | 99.8%Excellent | 8 tests99.51–99.92% | 114%of label | Apr 20, 2026 | View → |
| GoAlpha Labs | 99.8%Excellent | 11 tests99.61–99.97% | 124%of label | Apr 12, 2026 | View → |
| Arcane Peptides1 test only | 99.8%Excellent | 1 test99.8% | 101%of label | Mar 24, 2026 | View → |
| VANDL Labs | 99.8%Excellent | 2 tests99.8–99.8% | 108%of label | Mar 30, 2026 | View → |
| NUPEPS Peptides | 99.8%Excellent | 3 tests99.8–99.8% | 106%of label | Jan 18, 2026 | View → |
| Noble Chems | 99.8%Excellent | 2 tests99.8–99.8% | 101%of label | Mar 29, 2026 | View → |
| Regenorix1 test only | 99.8%Excellent | 1 test99.8% | 102%of label | Feb 23, 2026 | View → |
| Good Science1 test only | 99.8%Excellent | 1 test99.8% | 116%of label | Jun 12, 2026 | View → |
| Zen Aminos | 99.8%Excellent | 21 tests99.31–99.97% | 106%of label | Jun 4, 2026 | View → |
| Simon's Compounding1 test only | 99.8%Excellent | 1 test99.8% | 110%of label | Feb 26, 2026 | View → |
| Research Peptides Europe1 test only | 99.8%Excellent | 1 test99.8% | 102%of label | Sep 25, 2025 | View → |
| Excalibur Peptides1 test only | 99.8%Excellent | 1 test99.8% | 102%of label | May 18, 2026 | View → |
| adriascience.com | 99.8%Excellent | 2 tests99.8–99.8% | 97%of label | Jun 8, 2026 | View → |
| Adria Science1 test only | 99.8%Excellent | 1 test99.8% | 101%of label | May 28, 2026 | View → |
| Vertex Labs | 99.8%Excellent | 3 tests99.7–99.9% | 111%of label | Jun 29, 2026 | View → |
| globalaminos.com peptides | 99.8%Excellent | 3 tests99.67–99.96% | 115%of label · 2 of 3 | Jul 13, 2026 | View → |
| saiyanmed.com | 99.8%Excellent | 2 tests99.74–99.86% | 99%of label | Feb 5, 2026 | View → |
| Sigma Audley (SSA)1 test only | 99.8%Excellent | 1 test99.8% | 112%of label | Jun 11, 2025 | View → |
| Penguin Peptides | 99.79%Excellent | 7 tests99.58–99.88% | 103%of label | Jan 20, 2026 | View → |
| NG Peptide1 test only | 99.79%Excellent | 1 test99.79% | 122%of label | Feb 25, 2026 | View → |
| NELA Peptides | 99.79%Excellent | 4 tests99.61–99.98% | 105%of label | Feb 27, 2026 | View → |
| Peptira | 99.79%Excellent | 25 tests99.26–99.98% | 123%of label | Feb 21, 2026 | View → |
| Everest Peptides1 test only | 99.79%Excellent | 1 test99.79% | 106%of label | Mar 10, 2026 | View → |
| Pura Peptide | 99.78%Excellent | 18 tests99.19–99.99% | 108%of label | Mar 9, 2026 | View → |
| Simply Peptides1 test only | 99.78%Excellent | 1 test99.78% | 96%of label | May 27, 2026 | View → |
| BulkGLP | 99.78%Excellent | 11 tests99.5–99.98% | 109%of label | May 30, 2026 | View → |
| researchchemhq.co | 99.78%Excellent | 8 tests99.39–99.95% | 107%of label | Jun 4, 2026 | View → |
| cosmicpeptides.com | 99.78%Excellent | 4 tests99.7–99.8% | 103%of label | Feb 26, 2026 | View → |
| MyPure Peptide1 test only | 99.77%Excellent | 1 test99.77% | 105%of label | Jul 9, 2025 | View → |
| Glacier Aminos | 99.77%Excellent | 17 tests99.1–99.97% | 106%of label | Mar 28, 2026 | View → |
| 24PEPTIDES | 99.77%Excellent | 10 tests99.6–99.8% | 106%of label | May 20, 2026 | View → |
| NuScience Peptides | 99.76%Excellent | 4 tests99.64–99.89% | 119%of label | Mar 3, 2026 | View → |
| Purity Peptides1 test only | 99.76%Excellent | 1 test99.76% | 103%of label | Apr 30, 2026 | View → |
| Neovia Peptides | 99.76%Excellent | 2 tests99.75–99.78% | 108%of label | Sep 18, 2025 | View → |
| Bluum Peptides | 99.76%Excellent | 10 tests99.43–99.97% | 103%of label | Jun 12, 2026 | View → |
| AS-RT501 test only | 99.76%Excellent | 1 test99.76% | 106%of label | Jul 9, 2026 | View → |
| Amino Amigos | 99.75%Excellent | 3 tests99.45–99.98% | 108%of label | Mar 10, 2025 | View → |
| Reta One Labs | 99.75%Excellent | 19 tests99.3–99.99% | 111%of label | Apr 13, 2026 | View → |
| AS-RT601 test only | 99.75%Excellent | 1 test99.75% | 104%of label | Jul 9, 2026 | View → |
| SRY | 99.75%Excellent | 2 tests99.7–99.81% | 115%of label | Jun 24, 2025 | View → |
| NextGen Peptides | 99.74%Excellent | 20 tests99.04–99.97% | 116%of label | Feb 28, 2026 | View → |
| Peptide Pro | 99.74%Excellent | 3 tests99.29–99.98% | 206%of label | Oct 31, 2025 | View → |
| Lab Trust Peptides1 test only | 99.74%Excellent | 1 test99.74% | 174%of label | Feb 28, 2025 | View → |
| Peptify UK1 test only | 99.74%Excellent | 1 test99.74% | 109%of label | May 7, 2026 | View → |
| Rivn Research | 99.74%Excellent | 3 tests99.53–99.89% | 102%of label | Apr 5, 2026 | View → |
| NEOPEPS1 test only | 99.74%Excellent | 1 test99.74% | 110%of label | Mar 17, 2026 | View → |
| Loti Labs | 99.73%Excellent | 4 tests99.7–99.76% | 110%of label | Mar 2, 2026 | View → |
| Nova Peptide Supply | 99.73%Excellent | 13 tests98.94–99.98% | 106%of label | May 1, 2026 | View → |
| BioBoostX1 test only | 99.73%Excellent | 1 test99.73% | 104%of label | Jan 20, 2026 | View → |
| Chimera Peptides | 99.73%Excellent | 7 tests99.43–99.9% | 107%of label | Jan 22, 2026 | View → |
| onedaycompounds.com | 99.73%Excellent | 12 tests99.05–99.92% | 104%of label | Jun 20, 2026 | View → |
| Petratide Science | 99.72%Excellent | 15 tests99.32–99.97% | 114%of label | May 18, 2026 | View → |
| virtuspeptides.com | 99.72%Excellent | 2 tests99.62–99.81% | 105%of label | Jul 1, 2026 | View → |
| Omegamino | 99.71%Excellent | 3 tests99.62–99.87% | 101%of label | Apr 8, 2026 | View → |
| aminovault.com | 99.71%Excellent | 2 tests99.64–99.77% | 104%of label | Jun 30, 2026 | View → |
| Hydro Research Peptides | 99.7%Excellent | 10 tests99.26–99.98% | 113%of label | Jul 30, 2025 | View → |
| Peptidology | 99.7%Excellent | 6 tests99.17–99.8% | 106%of label | Mar 31, 2026 | View → |
| Wolverine Peptides | 99.7%Excellent | 13 tests99.19–99.95% | 118%of label | May 17, 2026 | View → |
| SRYLAB | 99.7%Excellent | 9 tests99.59–99.88% | 120%of label | Sep 9, 2025 | View → |
| Aminos Research | 99.7%Excellent | 3 tests99.56–99.85% | 112%of label | Nov 12, 2025 | View → |
| SG Peptide1 test only | 99.69%Excellent | 1 test99.69% | 119%of label | Feb 22, 2026 | View → |
| Optima Chemical Supply Inc. | 99.69%Excellent | 2 tests99.55–99.83% | 108%of label | Jul 30, 2025 | View → |
| Licensed Peptides | 99.68%Excellent | 13 tests99.03–99.8% | 112%of label | Jan 28, 2026 | View → |
| Purified Peptide | 99.68%Excellent | 4 tests99.51–99.82% | 116%of label | Jan 19, 2026 | View → |
| Sterling Peptides | 99.68%Excellent | 3 tests99.41–99.88% | 111%of label | Jun 15, 2026 | View → |
| Profound Aminos | 99.67%Excellent | 26 tests98.86–99.99% | 117%of label | May 4, 2026 | View → |
| Qing Li Peptide1 test only | 99.66%Excellent | 1 test99.66% | 104%of label | Mar 21, 2025 | View → |
| Synthesis Peptides | 99.66%Excellent | 6 tests98.86–99.96% | 121%of label | May 24, 2026 | View → |
| blueskypeptide.com1 test only | 99.66%Excellent | 1 test99.66% | — | Jun 18, 2026 | View → |
| Aavant (ACR) | 99.66%Excellent | 3 tests99.24–99.93% | 116%of label | May 26, 2026 | View → |
| Optima Chemical supply | 99.65%Excellent | 5 tests99.29–99.92% | 113%of label | Apr 28, 2025 | View → |
| NOVA Labs1 test only | 99.65%Excellent | 1 test99.65% | 112%of label | Apr 13, 2026 | View → |
| marvel-peptide.com1 test only | 99.65%Excellent | 1 test99.65% | 112%of label | Oct 25, 2025 | View → |
| BleauGenics | 99.64%Excellent | 2 tests99.57–99.71% | 109%of label | May 2, 2025 | View → |
| Rhome Research | 99.64%Excellent | 2 tests99.6–99.69% | 102%of label | Jun 22, 2026 | View → |
| Glowing Peptides1 test only | 99.64%Excellent | 1 test99.64% | 107%of label | Feb 12, 2026 | View → |
| BetterBio Synthesis1 test only | 99.64%Excellent | 1 test99.64% | 104%of label | Oct 3, 2025 | View → |
| Peptide Koning | 99.64%Excellent | 5 tests99.22–99.89% | 108%of label | Feb 17, 2026 | View → |
| Modern Aminos | 99.63%Excellent | 5 tests99.24–99.87% | 118%of label | Feb 20, 2026 | View → |
| AMP | 99.63%Excellent | 6 tests99.27–99.84% | 115%of label | Jul 2, 2026 | View → |
| studzpeptides.com | 99.63%Excellent | 8 tests99.22–99.94% | 106%of label | Jun 28, 2026 | View → |
| ascensionpeptides.com | 99.63%Excellent | 4 tests98.86–99.94% | 112%of label | May 21, 2026 | View → |
| Mile High Compounds | 99.62%Excellent | 5 tests99.09–99.8% | 106%of label | Mar 9, 2026 | View → |
| Royal Peptides | 99.62%Excellent | 14 tests99.11–99.95% | 117%of label | Apr 1, 2026 | View → |
| Proxiva Labs1 test only | 99.62%Excellent | 1 test99.62% | 111%of label | Feb 7, 2026 | View → |
| AS-RT301 test only | 99.62%Excellent | 1 test99.62% | 106%of label | Jul 9, 2026 | View → |
| Soma Chems | 99.61%Excellent | 2 tests99.29–99.92% | 111%of label | Feb 16, 2026 | View → |
| Astra Peptides | 99.61%Excellent | 2 tests99.58–99.64% | 101%of label | Jan 27, 2026 | View → |
| perfectpeptides.com | 99.61%Excellent | 5 tests99.15–99.9% | 105%of label | May 30, 2026 | View → |
| honestpeptide.com | 99.61%Excellent | 2 tests99.54–99.67% | 123%of label | Apr 15, 2026 | View → |
| Skye Peptides | 99.6%Excellent | 22 tests99.28–99.9% | 115%of label | Mar 5, 2026 | View → |
| Prime Peptides | 99.6%Excellent | 2 tests99.38–99.82% | 101%of label | Mar 5, 2026 | View → |
| modifiedaminos.shop peptides | 99.6%Excellent | 5 tests99–99.8% | 105%of label | Jun 8, 2026 | View → |
| EvoLabs Research | 99.59%Excellent | 5 tests99.03–99.91% | 106%of label | Dec 1, 2025 | View → |
| HkRoids | 99.59%Excellent | 17 tests98.59–99.95% | 115%of label | Mar 3, 2026 | View → |
| Peptide Crafters | 99.58%Excellent | 27 tests98.73–99.86% | 112%of label | Mar 12, 2026 | View → |
| Grey Market Peptides | 99.58%Excellent | 2 tests99.29–99.88% | 128%of label | Feb 16, 2026 | View → |
| AminoForge | 99.58%Excellent | 4 tests99.21–99.92% | 106%of label | Mar 11, 2026 | View → |
| ezpeptides.com | 99.58%Excellent | 4 tests99.28–99.81% | 115%of label | Jul 2, 2026 | View → |
| aavantpeptides.com | 99.58%Excellent | 10 tests99.18–99.98% | 114%of label | Mar 26, 2026 | View → |
| RC Peptides | 99.57%Excellent | 2 tests99.32–99.81% | 134%of label | May 6, 2026 | View → |
| Priority Peptides1 test only | 99.57%Excellent | 1 test99.57% | 92%of label | Oct 16, 2024 | View → |
| Life Peptide1 test only | 99.57%Excellent | 1 test99.57% | 109%of label | May 7, 2026 | View → |
| AS-RT201 test only | 99.57%Excellent | 1 test99.57% | 103%of label | Jul 9, 2026 | View → |
| Polaris Peptides | 99.56%Excellent | 15 tests99.02–99.95% | 114%of label | Mar 3, 2026 | View → |
| Peptidic | 99.56%Excellent | 2 tests99.36–99.76% | 120%of label | Aug 12, 2025 | View → |
| Atomik Labz | 99.55%Excellent | 20 tests99.03–99.85% | 105%of label | Mar 29, 2026 | View → |
| Nuscience Peptides1 test only | 99.54%Excellent | 1 test99.54% | 125%of label | Feb 12, 2026 | View → |
| Research Ready Peptides1 test only | 99.54%Excellent | 1 test99.54% | 108%of label | Nov 13, 2025 | View → |
| Coffee and Peppers | 99.53%Excellent | 11 tests98.59–99.94% | 108%of label | Apr 21, 2026 | View → |
| Nextday Sciences | 99.53%Excellent | 2 tests99.18–99.88% | 112%of label | Feb 12, 2026 | View → |
| cernumbiosciences.com1 test only | 99.53%Excellent | 1 test99.53% | 97%of label | Nov 3, 2025 | View → |
| Luxara Research Company | 99.52%Excellent | 3 tests99.47–99.56% | 110%of label | Feb 5, 2026 | View → |
| ignitepeptides.com1 test only | 99.52%Excellent | 1 test99.52% | 110%of label | Jun 8, 2025 | View → |
| crownwellresearch.com | 99.51%Excellent | 3 tests99.09–99.78% | 113%of label | Feb 14, 2026 | View → |
| Eternal Peptides | 99.5%Excellent | 2 tests99.36–99.64% | 120%of label | Dec 3, 2025 | View → |
| Peak Peptides | 99.5%Excellent | 6 tests99.4–99.7% | 114%of label | Apr 12, 2026 | View → |
| XL Peptides | 99.5%Excellent | 2 tests99.11–99.89% | 107%of label | Apr 21, 2026 | View → |
| Growth Guys | 99.5%Excellent | 16 tests98.51–99.93% | 107%of label | Mar 23, 2026 | View → |
| Gentleman Peptides1 test only | 99.5%Excellent | 1 test99.5% | 105%of label | Feb 14, 2026 | View → |
| Peptide Partners | 99.49%Excellent | 10 tests98.98–99.72% | 116%of label | Apr 16, 2026 | View → |
| Peppy&Me | 99.48%Excellent | 4 tests99.2–99.8% | 118%of label | Apr 9, 2026 | View → |
| Peptide Hackers1 test only | 99.47%Excellent | 1 test99.47% | 108%of label | Jan 26, 2026 | View → |
| Xeno Peptides1 test only | 99.47%Excellent | 1 test99.47% | 115%of label | Oct 6, 2025 | View → |
| liliPetide Technology Co., Ltd.1 test only | 99.47%Excellent | 1 test99.47% | 116%of label | Jun 23, 2026 | View → |
| Strate Labs | 99.44%Excellent | 2 tests99.4–99.47% | 111%of label | Nov 13, 2025 | View → |
| TNN Peptides1 test only | 99.42%Excellent | 1 test99.42% | 111%of label | Aug 7, 2025 | View → |
| Next Generation Compounds | 99.41%Excellent | 2 tests99.25–99.57% | 114%of label | Jan 23, 2026 | View → |
| Amino Lair1 test only | 99.41%Excellent | 1 test99.41% | 106%of label | Mar 5, 2026 | View → |
| Disguised Alpha | 99.38%Excellent | 4 tests97.98–99.97% | 112%of label | May 17, 2026 | View → |
| utherpeptide.com | 99.38%Excellent | 2 tests99.19–99.58% | 117%of label | Sep 18, 2025 | View → |
| Direct Peptides | 99.37%Excellent | 2 tests99.32–99.42% | 111%of label | Mar 14, 2026 | View → |
| Alpha Carbon Labs1 test only | 99.37%Excellent | 1 test99.37% | 107%of label | Dec 1, 2025 | View → |
| AS-RT101 test only | 99.35%Excellent | 1 test99.35% | 106%of label | Jul 9, 2026 | View → |
| CertaPeptides1 test only | 99.34%Excellent | 1 test99.34% | 134%of label | Jun 19, 2026 | View → |
| Tydes | 99.33%Excellent | 2 tests99.31–99.35% | 113%of label | Jan 27, 2026 | View → |
| Bulk Peptide Supply | 99.31%Excellent | 2 tests98.81–99.8% | 102%of label | Sep 27, 2025 | View → |
| Elutide | 99.31%Excellent | 8 tests98.69–99.68% | 102%of label | Jun 8, 2026 | View → |
| Omega Peptides Australia1 test only | 99.31%Excellent | 1 test99.31% | 127%of label | Jul 31, 2025 | View → |
| NovaCell Peptides | 99.3%Excellent | 2 tests98.8–99.8% | 105%of label | Apr 20, 2026 | View → |
| VPEX Online1 test only | 99.29%Excellent | 1 test99.29% | 113%of label | May 4, 2026 | View → |
| NEXAPH1 test only | 99.23%Excellent | 1 test99.23% | 119%of label | Feb 9, 2026 | View → |
| Oupeptide1 test only | 99.17%Excellent | 1 test99.17% | 113%of label | Apr 28, 2025 | View → |
| volterasciences.com1 test only | 99.15%Excellent | 1 test99.15% | 106%of label | Jun 5, 2026 | View → |
| Kensington Labs1 test only | 99.08%Excellent | 1 test99.08% | 108%of label | Jul 9, 2025 | View → |
| Pure Peptides1 test only | 99.06%Excellent | 1 test99.06% | 113%of label | Mar 12, 2026 | View → |
| Honest Peptide1 test only | 99.02%Excellent | 1 test99.02% | 114%of label | Mar 31, 2026 | View → |
| Stratford Peptides | 99%Excellent | 2 tests99–99% | 102%of label | Feb 27, 2026 | View → |
| Evolve BioPep | 98.6%Research grade | 3 tests98–99.8% | 102%of label | Apr 12, 2026 | View → |
| Instant Peptides | 98.04%Research grade | 20 tests64.06–99.98% | 114%of label | Mar 24, 2026 | View → |
| PEPTIDE Power1 test only | 94.75%Below standard | 1 test94.75% | 107%of label | Nov 4, 2025 | View → |
Purity is the percentage of the sample that's the target peptide. Net content is how many milligrams of actual peptide are in the vial after water, salts, and solvents. A vial can be 99% pure but contain far less peptide than its label says — net content is the number that determines your real dose. A 99%-pure vial at 60% of label is worse than a 97%-pure vial at 105%.
Learn more in how peptide testing works.
Peptide purity is one of the most important quality indicators. Higher purity means fewer impurities, degradation products, and potential contaminants. Third-party lab testing by independent laboratories provides the most reliable purity data — more trustworthy than vendor-provided certificates.
But purity alone doesn't tell the whole story. Always check the test count. Eight tests all landing at 99%+ is far stronger evidence than a single test at 99.9% — which is why this tool shows the spread and flags single-test brands.
HPLC separates a peptide sample into its individual components and measures the proportion that is the target peptide versus impurities. 99% purity means 99% of the sample is the target peptide.
| Purity Range | Classification | Typical Use Case |
|---|---|---|
| ≥ 99% | Excellent | Quantitative research, sensitive assays |
| 98–98.9% | Research grade | General research applications |
| 95–97.9% | Marginal | Screening, preliminary research only |
| < 95% | Below standard | Not suitable for most applications |
Results come from independently commissioned tests (samples purchased anonymously and tested blind), verified community-submitted reports, and vendor-submitted third-party results — all linked to the original lab documentation. No test can be paid for, hidden, or removed, the same independence promise as the Trust Score. For guidance on commissioning your own test, see how to get your peptides independently tested.
This tool is for educational and informational purposes only and does not constitute medical advice. Peptides discussed may be investigational compounds not approved by the FDA for human use. Peptigrity is an independent review platform and does not sell, endorse, or recommend specific products or vendors.