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 | |
|---|---|---|---|---|---|
| Pure Peptides1 test only | 99.99%Excellent | 1 test99.99% | 121%of label | Dec 15, 2025 | View → |
| volterasciences.com1 test only | 99.98%Excellent | 1 test99.98% | 111%of label | May 14, 2026 | View → |
| EvoLabs Research1 test only | 99.95%Excellent | 1 test99.95% | 120%of label | Nov 25, 2025 | View → |
| NEOPEPS1 test only | 99.94%Excellent | 1 test99.94% | 109%of label | Apr 29, 2026 | View → |
| studzpeptides.com | 99.93%Excellent | 2 tests99.89–99.98% | 109%of label | Jun 28, 2026 | View → |
| EZP1 test only | 99.91%Excellent | 1 test99.91% | 121%of label | May 25, 2026 | View → |
| Licensed Peptides1 test only | 99.9%Excellent | 1 test99.9% | 113%of label | Oct 8, 2025 | View → |
| Primal Peptides1 test only | 99.9%Excellent | 1 test99.9% | 116%of label | Jan 5, 2026 | View → |
| Peptide Koning | 99.9%Excellent | 2 tests99.83–99.96% | 108%of label | Mar 20, 2026 | View → |
| NEXAPH | 99.89%Excellent | 2 tests99.88–99.9% | 123%of label | Mar 23, 2026 | View → |
| Real Peptides1 test only | 99.89%Excellent | 1 test99.89% | 114%of label | Mar 5, 2026 | View → |
| Humatide | 99.89%Excellent | 3 tests99.75–99.97% | 104%of label | Jun 27, 2026 | View → |
| AMP | 99.89%Excellent | 2 tests99.88–99.89% | 122%of label | May 25, 2026 | View → |
| cernumbiosciences.com1 test only | 99.87%Excellent | 1 test99.87% | 134%of label | Oct 31, 2025 | View → |
| MyPure Peptide1 test only | 99.86%Excellent | 1 test99.86% | 118%of label | Sep 1, 2025 | View → |
| BioBoostX1 test only | 99.86%Excellent | 1 test99.86% | 121%of label | Feb 10, 2026 | View → |
| Ascension Peptides | 99.85%Excellent | 3 tests99.79–99.97% | 131%of label | Feb 24, 2026 | View → |
| Wolverine Peptides1 test only | 99.85%Excellent | 1 test99.85% | 109%of label | May 15, 2024 | View → |
| NeuroLabs Research1 test only | 99.85%Excellent | 1 test99.85% | 120%of label | Feb 9, 2026 | View → |
| Kimera Chems | 99.85%Excellent | 3 tests99.68–99.97% | 110%of label | Apr 10, 2026 | View → |
| New Wave Peptides1 test only | 99.85%Excellent | 1 test99.85% | 103%of label | Mar 31, 2026 | View → |
| ezpeptides.com1 test only | 99.85%Excellent | 1 test99.85% | 123%of label | Feb 25, 2026 | View → |
| Glowing Peptides1 test only | 99.84%Excellent | 1 test99.84% | 110%of label | Feb 26, 2026 | View → |
| Peptidic1 test only | 99.83%Excellent | 1 test99.83% | 129%of label | Aug 12, 2025 | View → |
| Royal Peptides | 99.83%Excellent | 2 tests99.8–99.87% | 118%of label | Feb 6, 2026 | View → |
| Trulab Peptides1 test only | 99.83%Excellent | 1 test99.83% | 119%of label | Aug 20, 2025 | View → |
| Qing Li Peptide1 test only | 99.82%Excellent | 1 test99.82% | 113%of label | Apr 16, 2025 | View → |
| Chameleon Peptides1 test only | 99.81%Excellent | 1 test99.81% | 87%of label | Jan 13, 2026 | View → |
| Panda Peptides1 test only | 99.81%Excellent | 1 test99.81% | 87%of label | Jan 13, 2026 | View → |
| Certified Peptides | 99.8%Excellent | 4 tests99.8–99.8% | 116%of label | Jan 5, 2026 | View → |
| Peak Peptide1 test only | 99.8%Excellent | 1 test99.8% | 118%of label | Apr 8, 2026 | View → |
| Peptide Pro1 test only | 99.8%Excellent | 1 test99.8% | 127%of label | Mar 9, 2026 | View → |
| NUPEPS Peptides | 99.8%Excellent | 2 tests99.8–99.8% | 156%of label | Jan 18, 2026 | View → |
| RC Peptides | 99.8%Excellent | 2 tests99.78–99.81% | 112%of label | May 6, 2026 | View → |
| Precisely Peptides1 test only | 99.8%Excellent | 1 test99.8% | 115%of label | May 13, 2026 | View → |
| Proxiva Labs | 99.8%Excellent | 2 tests99.8–99.8% | 111%of label | Feb 7, 2026 | View → |
| Research Peptides Europe | 99.8%Excellent | 2 tests99.79–99.8% | 124%of label | May 28, 2026 | View → |
| NovaCell Peptides1 test only | 99.8%Excellent | 1 test99.8% | 94%of label | Mar 9, 2026 | View → |
| modifiedaminos.shop peptides1 test only | 99.8%Excellent | 1 test99.8% | 82%of label | Apr 20, 2026 | View → |
| corepeptides.com | 99.8%Excellent | 2 tests99.8–99.8% | 100%of label | Apr 2, 2026 | View → |
| Tydes Shop | 99.79%Excellent | 3 tests99.58–99.96% | 120%of label | Aug 27, 2025 | View → |
| vicorpus.com1 test only | 99.79%Excellent | 1 test99.79% | 111%of label | Mar 10, 2026 | View → |
| blueskypeptide.com1 test only | 99.79%Excellent | 1 test99.79% | — | Jun 23, 2026 | View → |
| Next Generation Compounds1 test only | 99.78%Excellent | 1 test99.78% | 117%of label | Feb 20, 2026 | View → |
| Aminos Research | 99.76%Excellent | 3 tests99.64–99.9% | 114%of label | Mar 2, 2026 | View → |
| Purity Peptides1 test only | 99.76%Excellent | 1 test99.76% | 100%of label | Apr 14, 2026 | View → |
| Peptify UK1 test only | 99.76%Excellent | 1 test99.76% | 116%of label | May 11, 2026 | View → |
| Trusted Peptides | 99.75%Excellent | 2 tests99.67–99.83% | 141%of label | Feb 27, 2026 | View → |
| Vertex Labs | 99.75%Excellent | 2 tests99.7–99.8% | 104%of label | Apr 22, 2026 | View → |
| americanpeptides.us | 99.75%Excellent | 2 tests99.7–99.8% | 114%of label | Apr 3, 2026 | View → |
| cosmicpeptides.com | 99.75%Excellent | 2 tests99.7–99.8% | 103%of label | Feb 24, 2026 | View → |
| Profound Aminos | 99.74%Excellent | 7 tests99.21–99.97% | 113%of label | May 5, 2026 | View → |
| BioLongevity Labs | 99.73%Excellent | 11 tests99.6–99.85% | 109%of label | May 1, 2026 | View → |
| Elite Research USA | 99.73%Excellent | 3 tests99.63–99.84% | 94%of label | Apr 17, 2026 | View → |
| Peptide Partners | 99.71%Excellent | 8 tests99.47–99.9% | 88%of label | Apr 21, 2026 | View → |
| Skye Peptides | 99.7%Excellent | 19 tests99.16–100% | 112%of label | Mar 16, 2026 | View → |
| BleauGenics1 test only | 99.7%Excellent | 1 test99.7% | 102%of label | May 3, 2024 | View → |
| Crush Research Supply | 99.7%Excellent | 2 tests99.69–99.7% | 117%of label | Apr 2, 2026 | View → |
| Evolabs Research | 99.7%Excellent | 3 tests99.66–99.75% | 112%of label | May 29, 2026 | View → |
| Omega Peptides Australia1 test only | 99.7%Excellent | 1 test99.7% | 133%of label | Jul 25, 2025 | View → |
| Omega Peptides1 test only | 99.67%Excellent | 1 test99.67% | 105%of label | Jun 2, 2026 | View → |
| 24PEPTIDES | 99.67%Excellent | 10 tests99.3–99.8% | 123%of label | Jun 22, 2026 | View → |
| ascensionpeptides.com | 99.67%Excellent | 3 tests99.44–99.79% | 135%of label | Jul 10, 2026 | View → |
| VRIL Peptides1 test only | 99.66%Excellent | 1 test99.66% | 97%of label | Mar 30, 2026 | View → |
| Simon's Compounding | 99.65%Excellent | 2 tests99.5–99.8% | 105%of label | Mar 20, 2026 | View → |
| Luxara Research Company | 99.65%Excellent | 5 tests99.15–99.95% | 113%of label | Feb 19, 2026 | View → |
| Amino USA | 99.64%Excellent | 11 tests99.08–99.92% | 109%of label | Apr 7, 2026 | View → |
| Peak Peptides | 99.64%Excellent | 3 tests99.4–99.8% | 113%of label | Feb 7, 2026 | View → |
| Growth Guys | 99.63%Excellent | 10 tests99.23–99.9% | 118%of label | Mar 24, 2026 | View → |
| Instant Peptides | 99.63%Excellent | 4 tests98.96–99.96% | 112%of label | May 20, 2026 | View → |
| Limitless Biotech1 test only | 99.62%Excellent | 1 test99.62% | 93%of label | Sep 11, 2025 | View → |
| Prime Peptides | 99.62%Excellent | 2 tests99.3–99.94% | 119%of label | Mar 6, 2026 | View → |
| AS-BP0101 test only | 99.61%Excellent | 1 test99.61% | 108%of label | Jul 9, 2026 | View → |
| Optima Chemical supply1 test only | 99.6%Excellent | 1 test99.6% | 139%of label | Nov 20, 2025 | View → |
| Reta One Labs | 99.6%Excellent | 3 tests99.36–99.8% | 116%of label | Apr 15, 2026 | View → |
| NOVA Labs1 test only | 99.6%Excellent | 1 test99.6% | 105%of label | Apr 13, 2026 | View → |
| PeptideGurus1 test only | 99.6%Excellent | 1 test99.6% | 92%of label | Jun 10, 2026 | View → |
| NextGen Peptides | 99.59%Excellent | 8 tests99.01–99.88% | 101%of label | Jan 26, 2026 | View → |
| Peptide Crafters | 99.59%Excellent | 8 tests99.24–99.9% | 110%of label | Feb 3, 2026 | View → |
| Peptidology | 99.59%Excellent | 12 tests99–99.8% | 113%of label | Mar 9, 2026 | View → |
| Honest Peptide | 99.59%Excellent | 3 tests99.35–99.82% | 107%of label | Apr 15, 2026 | View → |
| Pure Health Peptides | 99.58%Excellent | 24 tests98.38–99.95% | 262%of label | Apr 16, 2026 | View → |
| Beyond Peptides1 test only | 99.57%Excellent | 1 test99.57% | 83%of label | Dec 5, 2025 | View → |
| Regen Peptides | 99.57%Excellent | 2 tests99.21–99.94% | 113%of label | May 25, 2026 | View → |
| Excalibur Peptides | 99.57%Excellent | 2 tests99.44–99.7% | 164%of label | Jun 12, 2026 | View → |
| Injectify | 99.56%Excellent | 3 tests99–99.86% | 106%of label | Jan 15, 2026 | View → |
| Regenerative Research | 99.55%Excellent | 3 tests99.13–99.81% | 109%of label | Mar 12, 2026 | View → |
| Grey Market Peptides | 99.55%Excellent | 3 tests99.2–99.94% | 134%of label | Feb 16, 2026 | View → |
| Purified Peptide1 test only | 99.55%Excellent | 1 test99.55% | 113%of label | Feb 18, 2026 | View → |
| Simply Peptides1 test only | 99.54%Excellent | 1 test99.54% | 117%of label | Dec 15, 2025 | View → |
| 1 test only | 99.53%Excellent | 1 test99.53% | 105%of label | Dec 22, 2025 | View → |
| Kensington Labs1 test only | 99.52%Excellent | 1 test99.52% | 119%of label | Oct 7, 2025 | View → |
| Liberty Peptides1 test only | 99.52%Excellent | 1 test99.52% | 109%of label | Jan 27, 2026 | View → |
| XL Peptides | 99.52%Excellent | 3 tests99.33–99.8% | 107%of label | Mar 17, 2026 | View → |
| DS Research Peptides1 test only | 99.52%Excellent | 1 test99.52% | 113%of label | Feb 21, 2026 | View → |
| Everest Peptides | 99.52%Excellent | 2 tests99.27–99.76% | 109%of label | May 27, 2026 | View → |
| Nextgen Peptides | 99.51%Excellent | 3 tests99.28–99.95% | 104%of label | May 24, 2026 | View → |
| ezpeps.com | 99.51%Excellent | 3 tests99.3–99.92% | 112%of label | Jun 26, 2026 | View → |
| Simple Peptides1 test only | 99.5%Excellent | 1 test99.5% | 103%of label | Jun 13, 2025 | View → |
| NuRev Peptides | 99.5%Excellent | 3 tests99.07–99.8% | 102%of label | Dec 27, 2025 | View → |
| Astra Peptides | 99.5%Excellent | 4 tests99.2–99.66% | 103%of label | Feb 2, 2026 | View → |
| Gentleman Peptides1 test only | 99.5%Excellent | 1 test99.5% | 102%of label | Feb 12, 2026 | View → |
| Adria Science1 test only | 99.5%Excellent | 1 test99.5% | 124%of label | May 28, 2026 | View → |
| badgercompounds.com1 test only | 99.5%Excellent | 1 test99.5% | 105%of label | Dec 28, 2025 | View → |
| Soma Chems | 99.49%Excellent | 5 tests99.09–99.94% | 124%of label | Feb 16, 2026 | View → |
| Rhome Research | 99.49%Excellent | 2 tests99.06–99.91% | 109%of label | Jun 22, 2026 | View → |
| Midwest BioResearch1 test only | 99.48%Excellent | 1 test99.48% | 98%of label | May 7, 2026 | View → |
| Xeno Peptides | 99.48%Excellent | 2 tests99.25–99.7% | 102%of label | Apr 23, 2026 | View → |
| Elutide | 99.47%Excellent | 6 tests99.25–99.89% | 101%of label | Jun 7, 2026 | View → |
| lapeptides.net | 99.47%Excellent | 4 tests98.85–99.9% | 123%of label | May 12, 2026 | View → |
| VANDL Labs | 99.46%Excellent | 2 tests99.13–99.8% | 116%of label | Mar 30, 2026 | View → |
| Pura Peptide | 99.45%Excellent | 3 tests99.1–99.73% | 112%of label | Feb 16, 2026 | View → |
| mspeptides.com | 99.45%Excellent | 5 tests99.1–99.94% | 126%of label · 4 of 5 | Jan 16, 2026 | View → |
| Atomik Labz | 99.42%Excellent | 8 tests99.01–99.76% | 116%of label | Mar 5, 2026 | View → |
| Rescue Research USA | 99.42%Excellent | 3 tests99.28–99.53% | 115%of label | Jun 14, 2026 | View → |
| lLIMITLESS biotech1 test only | 99.41%Excellent | 1 test99.41% | 102%of label | Oct 3, 2025 | View → |
| LIMITLESS biotech1 test only | 99.41%Excellent | 1 test99.41% | 102%of label | Oct 3, 2025 | View → |
| Oath Peptides | 99.41%Excellent | 19 tests98.61–99.91% | 155%of label | May 23, 2026 | View → |
| Good Science | 99.41%Excellent | 6 tests99.02–99.8% | 107%of label | May 27, 2026 | View → |
| Zen Aminos | 99.41%Excellent | 6 tests99.07–99.7% | 86%of label | Jun 4, 2026 | View → |
| saiyanmed.com1 test only | 99.41%Excellent | 1 test99.41% | 116%of label | Apr 21, 2026 | View → |
| honestpeptide.com | 99.4%Excellent | 3 tests99.07–99.59% | 123%of label | Jun 29, 2026 | View → |
| Power Peptides | 99.39%Excellent | 8 tests98.58–99.73% | 103%of label | Nov 7, 2025 | View → |
| Orbitrex Peptides1 test only | 99.36%Excellent | 1 test99.36% | 135%of label | Feb 17, 2026 | View → |
| ThreeSide Peptides | 99.36%Excellent | 3 tests98.68–99.84% | 105%of label | Jan 15, 2026 | View → |
| Eternal Peptides | 99.35%Excellent | 3 tests99.18–99.69% | 113%of label | Oct 21, 2025 | View → |
| Petratide Science | 99.35%Excellent | 6 tests99.19–99.45% | 107%of label | May 30, 2026 | View → |
| Hydro Research Peptides | 99.33%Excellent | 2 tests99.07–99.6% | 138%of label | Nov 20, 2025 | View → |
| BetterBio Synthesis | 99.33%Excellent | 2 tests99.08–99.59% | 110%of label | Jun 8, 2026 | View → |
| modernresearchpeptides.net | 99.33%Excellent | 3 tests99.19–99.61% | 106%of label | Jun 10, 2026 | View → |
| aavantpeptides.com1 test only | 99.33%Excellent | 1 test99.33% | 118%of label | Dec 23, 2025 | View → |
| Loti Labs1 test only | 99.32%Excellent | 1 test99.32% | 116%of label | Mar 2, 2026 | View → |
| Midway Gray1 test only | 99.32%Excellent | 1 test99.32% | 103%of label | Jan 3, 2026 | View → |
| Verified Peptides | 99.31%Excellent | 20 tests97.62–99.95% | 104%of label | Apr 24, 2026 | View → |
| Nova Peptide Supply | 99.31%Excellent | 6 tests99.05–99.95% | 106%of label | Apr 7, 2026 | View → |
| Bluum Peptides | 99.31%Excellent | 6 tests99.03–99.57% | 101%of label | Jun 12, 2026 | View → |
| Alpha Peptides | 99.31%Excellent | 2 tests99.01–99.6% | 108%of label | May 1, 2026 | View → |
| Mindful Research1 test only | 99.3%Excellent | 1 test99.3% | 125%of label | Feb 23, 2025 | View → |
| Blank Peptides | 99.3%Excellent | 10 tests98.76–99.95% | 115%of label | Apr 7, 2026 | View → |
| Vera Peptides1 test only | 99.3%Excellent | 1 test99.3% | 112%of label | Apr 7, 2026 | View → |
| Core Peptides | 99.29%Excellent | 2 tests99.16–99.42% | 115%of label | Dec 9, 2025 | View → |
| Glacier Aminos | 99.28%Excellent | 16 tests98.14–99.89% | 103%of label | Apr 9, 2026 | View → |
| HkRoids | 99.27%Excellent | 16 tests98.47–99.9% | 113%of label | Mar 3, 2026 | View → |
| Simple Peptide | 99.26%Excellent | 7 tests98.2–99.94% | 111%of label | Feb 25, 2026 | View → |
| NELA Peptides | 99.26%Excellent | 2 tests99.26–99.26% | 110%of label | Jan 13, 2026 | View → |
| Instant Peptides | 99.25%Excellent | 10 tests98.95–99.6% | 110%of label | Feb 9, 2026 | View → |
| Optima Supply1 test only | 99.25%Excellent | 1 test99.25% | 110%of label | Oct 18, 2025 | View → |
| Peptira | 99.25%Excellent | 10 tests97.74–99.95% | 118%of label | Mar 19, 2026 | View → |
| Stratford Peptides | 99.25%Excellent | 4 tests99–99.61% | 115%of label | Apr 27, 2026 | View → |
| researchchemhq.co | 99.24%Excellent | 11 tests98.23–99.93% | 106%of label | Jun 4, 2026 | View → |
| Direct Peptides | 99.23%Excellent | 8 tests99.15–99.32% | 94%of label | Mar 24, 2026 | View → |
| Coffee and Peppers | 99.23%Excellent | 9 tests99.03–99.82% | 113%of label | Apr 21, 2026 | View → |
| Valor Peptides | 99.23%Excellent | 8 tests98.29–99.8% | 112%of label | May 4, 2026 | View → |
| Sterling Peptides1 test only | 99.23%Excellent | 1 test99.23% | 112%of label | Jun 2, 2026 | View → |
| Synthesis Peptides | 99.22%Excellent | 5 tests98.27–99.89% | 108%of label | May 20, 2026 | View → |
| Peptide Pro Canada1 test only | 99.22%Excellent | 1 test99.22% | 110%of label | May 20, 2026 | View → |
| Peptidex1 test only | 99.21%Excellent | 1 test99.21% | 111%of label | Nov 21, 2025 | View → |
| AminoForge | 99.21%Excellent | 4 tests99.15–99.26% | 100%of label | May 25, 2026 | View → |
| Peptide Supply Co | 99.2%Excellent | 4 tests99.03–99.46% | 107%of label | Apr 3, 2026 | View → |
| RUO | 99.2%Excellent | 5 tests98.35–99.8% | 120%of label | May 5, 2026 | View → |
| biopeptitech.com1 test only | 99.2%Excellent | 1 test99.2% | 114%of label | Feb 28, 2025 | View → |
| Coastal Peptides | 99.19%Excellent | 3 tests98.83–99.79% | 107%of label | Oct 24, 2025 | View → |
| Modern Aminos | 99.19%Excellent | 2 tests98.97–99.4% | 105%of label | Mar 10, 2026 | View → |
| Protide Health | 99.19%Excellent | 10 tests98.54–99.66% | 120%of label | May 30, 2026 | View → |
| Omegamino1 test only | 99.17%Excellent | 1 test99.17% | 128%of label | Apr 8, 2026 | View → |
| Rivn Research | 99.17%Excellent | 2 tests99.15–99.19% | 93%of label | Apr 5, 2026 | View → |
| Vylix Research | 99.15%Excellent | 2 tests99.14–99.17% | 116%of label | Mar 26, 2026 | View → |
| PEPTIDE Power1 test only | 99.15%Excellent | 1 test99.15% | 102%of label | Nov 4, 2025 | View → |
| globalaminos.com peptides1 test only | 99.15%Excellent | 1 test99.15% | 101%of label | Jun 7, 2026 | View → |
| Prosperity Peptides | 99.14%Excellent | 2 tests99.01–99.26% | 133%of label | Feb 21, 2026 | View → |
| Amino Lair | 99.13%Excellent | 2 tests98.47–99.79% | 116%of label | Feb 7, 2026 | View → |
| Priority Peptides1 test only | 99.13%Excellent | 1 test99.13% | 119%of label | Oct 16, 2024 | View → |
| perfectpeptides.com | 99.13%Excellent | 3 tests98.81–99.29% | 98%of label | May 31, 2026 | View → |
| OROS Research | 99.12%Excellent | 12 tests98.15–99.89% | 123%of label | Feb 17, 2026 | View → |
| Empower Peptides | 99.12%Excellent | 10 tests98.75–99.9% | 103%of label | Apr 28, 2026 | View → |
| Thrive Peptides1 test only | 99.12%Excellent | 1 test99.12% | 94%of label | Apr 9, 2026 | View → |
| Amino Club1 test only | 99.11%Excellent | 1 test99.11% | 117%of label | Feb 7, 2026 | View → |
| ignitepeptides.com1 test only | 99.11%Excellent | 1 test99.11% | 108%of label | Jun 19, 2025 | View → |
| Peakform Peptides | 99.09%Excellent | 3 tests98–99.97% | 114%of label | Jan 23, 2026 | View → |
| Arcane Peptides | 99.08%Excellent | 2 tests98.35–99.8% | 105%of label | May 5, 2026 | View → |
| onedaycompounds.com | 99.08%Excellent | 2 tests99.06–99.1% | 111%of label | Mar 27, 2026 | View → |
| Mile High Compounds | 99.07%Excellent | 5 tests98.35–99.8% | 106%of label | Jan 6, 2026 | View → |
| Optima Chemical Supply Inc.1 test only | 99.07%Excellent | 1 test99.07% | 137%of label | Nov 20, 2025 | View → |
| LuvionBio | 99.07%Excellent | 6 tests97.1–99.93% | 111%of label | Mar 6, 2026 | View → |
| GoAlpha Labs | 99.07%Excellent | 7 tests98.33–99.58% | 128%of label | Apr 12, 2026 | View → |
| AminoQuest Labs | 99.07%Excellent | 3 tests99.01–99.16% | 128%of label | Feb 27, 2026 | View → |
| Amino Amigos | 99.06%Excellent | 2 tests98.34–99.78% | 98%of label | Jan 15, 2025 | View → |
| PeptidePlugs1 test only | 99.04%Excellent | 1 test99.04% | 99%of label | Jan 12, 2026 | View → |
| Lab Trust Peptides1 test only | 99.04%Excellent | 1 test99.04% | 100%of label | Jun 12, 2024 | View → |
| IRON Peptides1 test only | 99.04%Excellent | 1 test99.04% | 119%of label | Dec 1, 2025 | View → |
| Alpha Carbon Labs1 test only | 99.02%Excellent | 1 test99.02% | 94%of label | Dec 2, 2025 | View → |
| Strate Labs1 test only | 99.01%Excellent | 1 test99.01% | 110%of label | Jun 23, 2025 | View → |
| Proforma Peptides | 99%Excellent | 10 tests99–99% | 107%of label | May 19, 2026 | View → |
| Regenorix1 test only | 99%Excellent | 1 test99% | 146%of label | Feb 23, 2026 | View → |
| NuScience Peptides | 98.99%Research grade | 4 tests97.48–99.52% | 113%of label | Feb 12, 2026 | View → |
| Felix Chemical Supply | 98.99%Research grade | 18 tests97.68–99.93% | 126%of label | Apr 26, 2026 | View → |
| IonPeptide | 98.97%Research grade | 13 tests98.08–99.78% | 110%of label | Mar 2, 2026 | View → |
| Limitless Life Nootropics | 98.96%Research grade | 6 tests95.41–99.99% | 103%of label | Apr 10, 2026 | View → |
| Riptide Wellness | 98.96%Research grade | 3 tests98.61–99.58% | 89%of label | Apr 22, 2026 | View → |
| National Science Labs | 98.91%Research grade | 2 tests98.82–99% | — | Jan 26, 2026 | View → |
| Disguised Alpha | 98.84%Research grade | 2 tests98.21–99.46% | 102%of label | Apr 22, 2026 | View → |
| aminovault.com1 test only | 98.8%Research grade | 1 test98.8% | 106%of label | Jul 13, 2026 | View → |
| Peptide Pro Shop | 98.79%Research grade | 4 tests98.08–99.7% | 110%of label | Feb 28, 2026 | View → |
| Bulk Peptide Supply | 98.72%Research grade | 3 tests98.68–98.79% | 102%of label | Aug 28, 2025 | View → |
| Research Peptides Lab | 98.72%Research grade | 3 tests97.97–99.27% | 151%of label | Jan 9, 2026 | View → |
| KÖLD | 98.51%Research grade | 4 tests98.2–98.63% | 111%of label | Mar 16, 2026 | View → |
| Finnerick1 test only | 98.44%Research grade | 1 test98.44% | 113%of label | Sep 1, 2025 | View → |
| Evolve BioPep | 98.42%Research grade | 3 tests98–99.26% | 101%of label | Apr 12, 2026 | View → |
| BulkGLP | 98.16%Research grade | 2 tests98.07–98.24% | 108%of label | Apr 19, 2026 | View → |
| Polaris Peptides | 98.1%Research grade | 4 tests95.84–99.36% | 112%of label | Aug 22, 2025 | View → |
| Biolabshop | 97.71%Marginal | 7 tests97–98% | 106%of label | Jul 16, 2025 | View → |
| Particle Peptides | 97.69%Marginal | 2 tests97.6–97.78% | 103%of label | Jan 29, 2026 | View → |
| Penguin Peptides | 95.7%Marginal | 2 tests91.65–99.76% | 91%of label | Jan 21, 2026 | 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.