Research-peptide vendors compared
Every vendor pepmg tracks by scraping their own live store — how many listings we see, their cheapest $/mg, a transparent Vendor Score, and whether they publish a Certificate of Analysis. Each profile links through to full prices and price history. The top 10 are the cheapest vendors scoring 80+; everyone else is listed by coverage. Product comparisons default to $/mg, and no vendor can pay for placement.
Rankings are never affected by affiliate status.
Run a peptide store? List your store. Submitting is free and never buys rank or score.
refreshed 22m ago · 93 of 104 publish a COA · 65 with a certificate openable at the lab · click any column to sort
Top 10: trusted and cheapest
How this is chosen: Vendor Score 80+, then cheapest vs the market median across the compounds they share (at least 3), recomputed with every price refresh. Methodology
All other vendors (94, by number of listings)
| Vendor | Listings | Compounds | Score | Cheapest $/mg | Online since | COA | Affiliate |
|---|---|---|---|---|---|---|---|
| Licensed Peptides Visit store ↗ · Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. 275 listings · 31 compounds · since May 2025 | 275 | 31 | 77 a few COAs openable at the testing lab (7 of 278) | $0.09 | May 2025 | 7 checkable at the lab | Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. |
| PureRawz Visit store ↗ 235 listings · 33 compounds · since 2019 | 235 | 33 | 72 third-party COAs, self-hosted | $0.11 | 2019 | 100 published | — |
| Solution Peptides Visit store ↗ 188 listings · 53 compounds · since 2023 | 188 | 53 | 35 COA documents, no lab named | $0.07 | 2023 | 164 published | — |
| Atomik Labz Visit store ↗ 187 listings · 56 compounds · since 2024 | 187 | 56 | 35 COA documents, no lab named | $0.07 | 2024 | 101 published | — |
| Glacier Aminos Visit store ↗ 176 listings · 37 compounds · since Aug 2025 | 176 | 37 | 78 some COAs openable at the testing lab (3 of 10) | $0.03 | Aug 2025 | 3 checkable at the lab | — |
| Nationwide Peptides Visit store ↗ · Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. 131 listings · 45 compounds · since Oct 2025 | 131 | 45 | 94 most COAs openable at the testing lab (88 of 98) | $0.05 | Oct 2025 | 88 checkable at the lab | Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. |
| Pure Tested Peptides Visit store ↗ 130 listings · 21 compounds · since Aug 2025 | 130 | 21 | 80 third-party COAs, self-hosted | $0.20 | Aug 2025 | 45 published | — |
| Peptide Partners Visit store ↗ 127 listings · 24 compounds · since Mar 2025 | 127 | 24 | 82 most COAs openable at the testing lab (149 of 287) | $0.11 | Mar 2025 | 149 checkable at the lab | — |
| Tydes Visit store ↗ 102 listings · 38 compounds · since 2023 | 102 | 38 | 96 COAs openable at the testing lab (66 of 66) | $0.14 | 2023 | 66 checkable at the lab | — |
| Paramount Peptides Visit store ↗ 97 listings · 35 compounds · since 2023 | 97 | 35 | 99 COAs openable at the testing lab (81 of 84) | $0.17 | 2023 | 81 checkable at the lab | — |
| Core Peptides Visit store ↗ 96 listings · 55 compounds · since 2019 | 96 | 55 | 80 third-party COAs, self-hosted | $1.16 | 2019 | 100 published | — |
| Modern Aminos Visit store ↗ 93 listings · 43 compounds · since 2022 | 93 | 43 | 76 some COAs openable at the testing lab (19 of 106) | $0.09 | 2022 | 19 checkable at the lab | — |
| Modern Research Peptides Visit store ↗ 92 listings · 44 compounds · since Sep 2025 | 92 | 44 | 96 most COAs openable at the testing lab (276 of 315) | $0.03 | Sep 2025 | 276 checkable at the lab | — |
| Swiss Chems Visit store ↗ 91 listings · 46 compounds · since 2020 | 91 | 46 | 99 COAs openable at the testing lab (72 of 74) | $0.05 | 2020 | 72 checkable at the lab | — |
| RUO.bio Visit store ↗ 79 listings · 50 compounds · since Jan 2025 | 79 | 50 | 89 some COAs openable at the testing lab (91 of 210) | $0.03 | Jan 2025 | 91 checkable at the lab | — |
| Optima Supply Visit store ↗ 78 listings · 26 compounds · since Apr 2025 | 78 | 26 | 79 some COAs openable at the testing lab (36 of 234) | $0.06 | Apr 2025 | 36 checkable at the lab | — |
| Biotech Peptides Visit store ↗ 77 listings · 46 compounds · since 2020 | 77 | 46 | 80 third-party COAs, self-hosted | $0.36 | 2020 | 160 published | — |
| My Amino Lab Visit store ↗ 75 listings · 25 compounds · since Mar 2026 | 75 | 25 | 99 COAs openable at the testing lab (91 of 98) | $0.05 | Mar 2026 | 91 checkable at the lab | — |
| Alpha Omega Peptide Visit store ↗ 74 listings · 31 compounds · since 2024 | 74 | 31 | 90 COAs openable at the testing lab (71 of 78) | $0.05 | 2024 | 71 checkable at the lab | — |
| Verified Peptides Visit store ↗ 70 listings · 33 compounds · since 2019 | 70 | 33 | 84 some COAs openable at the testing lab (45 of 210) | $0.05 | 2019 | 45 checkable at the lab | — |
| Welli Labs Visit store ↗ 68 listings · 35 compounds · since Jul 2025 | 68 | 35 | 72 COAs openable at the testing lab (1 of 1) | $0.03 | Jul 2025 | 1 checkable at the lab | — |
| NextGenPeps Visit store ↗ 67 listings · 23 compounds · since Jul 2025 | 67 | 23 | 85 some COAs openable at the testing lab (21 of 79) | $1.02 | Jul 2025 | 21 checkable at the lab | — |
| NuScience Peptides Visit store ↗ 66 listings · 43 compounds · since 2023 | 66 | 43 | 97 most COAs openable at the testing lab (87 of 103) | $0.10 | 2023 | 87 checkable at the lab | — |
| LA Peptides Visit store ↗ · Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. 66 listings · 5 compounds · since 2021 | 66 | 5 | 77 some COAs openable at the testing lab (32 of 137) | $0.08 | 2021 | 32 checkable at the lab | Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. |
| AMC-Essentials Visit store ↗ 64 listings · 36 compounds · since 2024 | 64 | 36 | 80 third-party COAs, self-hosted | $0.05 | 2024 | 66 published | — |
| Oros Research Visit store ↗ 63 listings · 30 compounds · since Feb 2025 | 63 | 30 | 88 some COAs openable at the testing lab (96 of 250) | $0.14 | Feb 2025 | 96 checkable at the lab | — |
| Happy Peptides Visit store ↗ 62 listings · 40 compounds · since 2023 | 62 | 40 | 89 some COAs openable at the testing lab (114 of 248) | $0.08 | 2023 | 114 checkable at the lab | — |
| Southern Aminos Visit store ↗ 58 listings · 33 compounds · since Aug 2025 | 58 | 33 | 74 a few COAs openable at the testing lab (1 of 10) | $0.03 | Aug 2025 | 1 checkable at the lab | — |
| Elite Miami Peptides Visit store ↗ 57 listings · 37 compounds · since 2024 | 57 | 37 | 80 third-party COAs, self-hosted | $0.06 | 2024 | 46 published | — |
| Bio Longevity Labs Visit store ↗ · Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. 57 listings · 30 compounds · since 2024 | 57 | 30 | 80 third-party COAs, self-hosted | $0.50 | 2024 | 310 published | Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. |
| Penguin Peptides Visit store ↗ 56 listings · 29 compounds · since Apr 2025 | 56 | 29 | 86 most COAs openable at the testing lab (47 of 94) | $0.05 | Apr 2025 | 47 checkable at the lab | — |
| Wellness Peptides Visit store ↗ 55 listings · 9 compounds · since Dec 2024 | 55 | 9 | 72 third-party COAs, self-hosted | $0.04 | Dec 2024 | 7 published | — |
| Orbitrex Peptide Visit store ↗ 55 listings · 27 compounds · since Sep 2025 | 55 | 27 | 85 most COAs openable at the testing lab (32 of 51) | $0.04 | Sep 2025 | 32 checkable at the lab | — |
| Platinum Lion Peptides Visit store ↗ 53 listings · 13 compounds · since 2023 | 53 | 13 | 86 most COAs openable at the testing lab (36 of 50) | $0.13 | 2023 | 36 checkable at the lab | — |
| Ameano Peptides Visit store ↗ 52 listings · 33 compounds · since Jan 2025 | 52 | 33 | 99 COAs openable at the testing lab (108 of 115) | $0.14 | Jan 2025 | 108 checkable at the lab | — |
| My Oasis Labs Visit store ↗ · Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. 52 listings · 33 compounds · since Nov 2024 | 52 | 33 | 93 most COAs openable at the testing lab (75 of 118) | $0.06 | Nov 2024 | 75 checkable at the lab | Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. |
| Nextech Laboratories Visit store ↗ 52 listings · 25 compounds · since 2024 | 52 | 25 | 81 a few COAs openable at the testing lab (2 of 74) | $0.12 | 2024 | 2 checkable at the lab | — |
| GenPeptide Visit store ↗ · Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. 51 listings · 24 compounds · since Sep 2025 | 51 | 24 | 93 most COAs openable at the testing lab (59 of 88) | $0.11 | Sep 2025 | 59 checkable at the lab | Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. |
| EZ Peptides Visit store ↗ 50 listings · 33 compounds · since 2023 | 50 | 33 | 100 COAs openable at the testing lab (136 of 136) | $0.14 | 2023 | 136 checkable at the lab | — |
| Regentide Visit store ↗ 50 listings · 26 compounds · since Sep 2025 | 50 | 26 | 5 no lab testing published that we could find | $0.05 | Sep 2025 | — | — |
| Valor Peptides Visit store ↗ 49 listings · 25 compounds · since May 2025 | 49 | 25 | 72 third-party COAs, self-hosted | $0.80 | May 2025 | 14 published | — |
| Planet Peptide Visit store ↗ 49 listings · 17 compounds · since 2023 | 49 | 17 | 5 no lab testing published that we could find | $0.05 | 2023 | — | — |
| Eternal Peptides Visit store ↗ 48 listings · 20 compounds · since May 2025 | 48 | 20 | 92 COAs openable at the testing lab (141 of 142) | $0.10 | May 2025 | 141 checkable at the lab | — |
| Ion Peptide Visit store ↗ 48 listings · 19 compounds · since Aug 2025 | 48 | 19 | 81 a few COAs openable at the testing lab (2 of 39) | $0.04 | Aug 2025 | 2 checkable at the lab | — |
| MOG Labs Visit store ↗ 46 listings · 36 compounds · since Oct 2025 | 46 | 36 | 86 most COAs openable at the testing lab (78 of 113) | $0.04 | Oct 2025 | 78 checkable at the lab | — |
| OneDay Compounds Visit store ↗ 46 listings · 26 compounds · since Jan 2026 | 46 | 26 | 72 third-party COAs, self-hosted | $0.03 | Jan 2026 | 143 published | — |
| Bulk Peptides Visit store ↗ 45 listings · 27 compounds · since 2010 | 45 | 27 | 87 COAs openable at the testing lab (9 of 9) | — | 2010 | 9 checkable at the lab | — |
| Nexaph Visit store ↗ 44 listings · 29 compounds · since 2024 | 44 | 29 | 95 COAs openable at the testing lab (88 of 89) | — | 2024 | 88 checkable at the lab | — |
| Feel Good Peptides Visit store ↗ 43 listings · 27 compounds · since Dec 2025 | 43 | 27 | 90 most COAs openable at the testing lab (90 of 131) | $0.10 | Dec 2025 | 90 checkable at the lab | — |
| Value Research Labs Visit store ↗ 39 listings · 29 compounds · since Jun 2026 | 39 | 29 | 72 third-party COAs, self-hosted | $0.04 | Jun 2026 | listed | — |
| Onyx Bio Labs Visit store ↗ 39 listings · 17 compounds · since Aug 2025 | 39 | 17 | 79 a few COAs openable at the testing lab (23 of 159) | $0.03 | Aug 2025 | 23 checkable at the lab | — |
| Supply Kore Visit store ↗ 39 listings · 19 compounds · since Oct 2025 | 39 | 19 | 72 third-party COAs, self-hosted | $0.12 | Oct 2025 | 65 published | — |
| 6A Labs Visit store ↗ 38 listings · 23 compounds · since Jan 2026 | 38 | 23 | 72 third-party COAs, self-hosted | $0.07 | Jan 2026 | 15 published | — |
| Red Rock Peptides Visit store ↗ 37 listings · 19 compounds · since Nov 2025 | 37 | 19 | 43 COA documents, no lab named | $0.05 | Nov 2025 | 8 published | — |
| Crownwell Research Visit store ↗ · Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. 37 listings · 7 compounds · since Jan 2026 | 37 | 7 | 35 COA documents, no lab named | $0.05 | Jan 2026 | 13 published | Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. |
| Zenith Bioscience Visit store ↗ 37 listings · 32 compounds · since 2013 | 37 | 32 | 5 no lab testing published that we could find | $0.03 | 2013 | — | — |
| Sports Technology Labs Visit store ↗ 36 listings · 24 compounds · since 2019 | 36 | 24 | 80 third-party COAs, self-hosted | $0.25 | 2019 | vendor-hosted | — |
| Ascension Peptides Visit store ↗ 35 listings · 27 compounds · since 2023 | 35 | 27 | 90 most COAs openable at the testing lab (88 of 100) | $0.10 | 2023 | 88 checkable at the lab | — |
| Cosmic Peptides Visit store ↗ 35 listings · 19 compounds · since Jul 2025 | 35 | 19 | 43 COA documents, no lab named | $0.08 | Jul 2025 | — | — |
| Simms Research Visit store ↗ 34 listings · 23 compounds | 34 | 23 | 76 third-party COAs, self-hosted | $0.05 | — | vendor-hosted | — |
| Qureshi Labs Visit store ↗ 34 listings · 18 compounds · since Jan 2026 | 34 | 18 | 72 COAs openable at the testing lab (2 of 2) | $0.04 | Jan 2026 | 2 checkable at the lab | — |
| True Research Labs Visit store ↗ 34 listings · 26 compounds · since Jan 2026 | 34 | 26 | 92 COAs openable at the testing lab (96 of 96) | $0.08 | Jan 2026 | 96 checkable at the lab | — |
| Trutide Solutions Visit store ↗ 34 listings · 21 compounds · since Sep 2025 | 34 | 21 | 77 a few COAs openable at the testing lab (1 of 16) | $0.03 | Sep 2025 | 1 checkable at the lab | — |
| Hydro Research Visit store ↗ 33 listings · 20 compounds · since 2023 | 33 | 20 | 100 a few COAs openable at the testing lab (37 of 283) | $0.06 | 2023 | 37 checkable at the lab | — |
| Puratek Peptides Visit store ↗ 33 listings · 22 compounds · since Dec 2025 | 33 | 22 | 28 lab named, no document reachable | $0.03 | Dec 2025 | — | — |
| Atomix Research Visit store ↗ 32 listings · 26 compounds · since 2024 | 32 | 26 | 81 a few COAs openable at the testing lab (5 of 70) | $0.04 | 2024 | 5 checkable at the lab | — |
| Rejuven8 Peptides Visit store ↗ 31 listings · 23 compounds · since Oct 2025 | 31 | 23 | 99 COAs openable at the testing lab (58 of 61) | $0.07 | Oct 2025 | 58 checkable at the lab | — |
| Riptide Wellness Visit store ↗ 31 listings · 4 compounds · since 2014 | 31 | 4 | 85 some COAs openable at the testing lab (19 of 42) | $2.25 | 2014 | 19 checkable at the lab | — |
| Pepvida Labs Visit store ↗ 30 listings · 18 compounds · since Sep 2025 | 30 | 18 | 72 third-party COAs, self-hosted | $0.11 | Sep 2025 | 12 published | — |
| Amino Science Visit store ↗ 30 listings · 21 compounds · since Mar 2026 | 30 | 21 | 100 COAs openable at the testing lab (90 of 90) | $0.07 | Mar 2026 | 90 checkable at the lab | — |
| Apex Peptides Visit store ↗ 29 listings · 16 compounds · since 2024 | 29 | 16 | 5 no lab testing published that we could find | $0.40 | 2024 | — | — |
| Midwest Peptide Visit store ↗ · Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. 29 listings · 14 compounds · since Aug 2025 | 29 | 14 | 13 no lab testing published that we could find | $0.04 | Aug 2025 | — | Affiliate link: pepmg may earn a commission. Affiliate status never affects ranking, price order or Vendor Scores. |
| Evergreen Peptides Visit store ↗ 28 listings · 20 compounds · since Mar 2026 | 28 | 20 | 91 COAs openable at the testing lab (31 of 32) | $0.05 | Mar 2026 | 31 checkable at the lab | — |
| FelixChem Visit store ↗ 26 listings · 19 compounds · since Apr 2025 | 26 | 19 | 74 a few COAs openable at the testing lab (1 of 9) | $0.08 | Apr 2025 | 1 checkable at the lab | — |
| Nuvia Peptides Visit store ↗ 26 listings · 16 compounds · since Dec 2025 | 26 | 16 | 83 a few COAs openable at the testing lab (2 of 15) | $0.08 | Dec 2025 | 2 checkable at the lab | — |
| Pinnacle Peptide Labs Visit store ↗ 25 listings · 21 compounds · since Jun 2025 | 25 | 21 | 91 most COAs openable at the testing lab (6 of 11) | $0.16 | Jun 2025 | 6 checkable at the lab | — |
| Ignite Peptides Visit store ↗ 25 listings · 14 compounds · since 2024 | 25 | 14 | 96 most COAs openable at the testing lab (35 of 43) | $0.04 | 2024 | 35 checkable at the lab | — |
| Empire Biolabs Visit store ↗ 25 listings · 18 compounds · since Feb 2026 | 25 | 18 | 80 third-party COAs, self-hosted | $0.22 | Feb 2026 | 25 published | — |
| Arcane Peptides Visit store ↗ 24 listings · 19 compounds · since Dec 2025 | 24 | 19 | 86 most COAs openable at the testing lab (57 of 82) | $0.04 | Dec 2025 | 57 checkable at the lab | — |
| Prime Peptides Visit store ↗ 23 listings · 16 compounds · since 2024 | 23 | 16 | 96 most COAs openable at the testing lab (60 of 73) | $0.05 | 2024 | 60 checkable at the lab | — |
| Omegamino Visit store ↗ 22 listings · 11 compounds · since Feb 2025 | 22 | 11 | 72 third-party COAs, self-hosted | $0.13 | Feb 2025 | 4 published | — |
| Peptide Phix Visit store ↗ 21 listings · 16 compounds · since May 2026 | 21 | 16 | 5 no lab testing published that we could find | $0.06 | May 2026 | — | — |
| Osae Research Visit store ↗ 20 listings · 8 compounds | 20 | 8 | 76 third-party COAs, self-hosted | $0.14 | — | vendor-hosted | — |
| Lumi Peptides Visit store ↗ 20 listings · 16 compounds · since May 2025 | 20 | 16 | 75 a few COAs openable at the testing lab (1 of 7) | $0.05 | May 2025 | 1 checkable at the lab | — |
| Voltera Sciences Visit store ↗ 19 listings · 11 compounds · since Apr 2026 | 19 | 11 | 80 third-party COAs, self-hosted | $2.12 | Apr 2026 | 54 published | — |
| Biocollex Research Visit store ↗ 18 listings · 17 compounds · since Dec 2025 | 18 | 17 | 97 most COAs openable at the testing lab (36 of 43) | $0.15 | Dec 2025 | 36 checkable at the lab | — |
| Lumina Research Labs Visit store ↗ 18 listings · 12 compounds · since Jun 2026 | 18 | 12 | 80 third-party COAs, self-hosted | $0.07 | Jun 2026 | vendor-hosted | — |
| Adonis Research Visit store ↗ 17 listings · 1 compounds · since Apr 2025 | 17 | 1 | 95 COAs openable at the testing lab (28 of 29) | $4.50 | Apr 2025 | 28 checkable at the lab | — |
| Thrive Peptides Visit store ↗ 17 listings · 15 compounds · since Feb 2026 | 17 | 15 | 72 third-party COAs, self-hosted | $0.08 | Feb 2026 | 4 published | — |
| Ageless Vitality Peptides Visit store ↗ 13 listings · 10 compounds · since May 2025 | 13 | 10 | 35 COA documents, no lab named | $0.16 | May 2025 | 18 published | — |
| Amino Sequence Visit store ↗ 13 listings · 9 compounds · since 2016 | 13 | 9 | 13 no lab testing published that we could find | $0.05 | 2016 | — | — |
| A1 Compounds Visit store ↗ 13 listings · 9 compounds | 13 | 9 | 35 COA documents, no lab named | $0.03 | — | — | — |
| Cheaper Peptides Visit store ↗ 13 listings · 8 compounds · since Feb 2026 | 13 | 8 | 43 COA documents, no lab named | $0.03 | Feb 2026 | — | — |
| Restore Peptides Visit store ↗ 9 listings · 5 compounds · since 2024 | 9 | 5 | 80 third-party COAs, self-hosted | $1.12 | 2024 | 8 published | — |
Vendor Score rates ONLY what a vendor publishes: lab-testing transparency, a real About page, and machine-readable prices. Price competitiveness, catalog size and track record are shown as facts and are deliberately NOT scored — how cheap a vendor is says nothing about how openly they publish, and $/mg is already the ranking. Every component, and what would raise it, is on the vendor's profile. It is affiliate-blind: paying pepmg a commission does not change it, and being a new domain is never a penalty.
All products listed are sold by third-party vendors for laboratory and research use only (RUO). Where an FDA label, a peer-reviewed study or a clinical-trial registry entry has published a dose, pepmg reports it with the source named and the tier labeled (a registry figure is marked trial registry, not peer-reviewed), because that is safer than guessing. It is a report, not medical advice and not a recommendation to use anything. pepmg sells nothing and ships nothing. Listings are price-tracking data, not endorsements.