Vendor ranking
New vendors and updated rankings, November 2026
Origin Labs leads the PepIndex board in November 2026 at 89.1 of 100, ahead of Next Gen Peptides at 87.7, across 57 scored vendors. Fourteen new vendors enter the record this month with 238 lot-level certificates between them, and none of them enters near the top: since 30 Oct 2026 a newly published vendor is scored at 70% of its evidence and earns the rest over 120 days listed, so Quanta Nova, at 95.4 on evidence, publishes at 66.8 and rank 23 of 71. Of the 57 vendors listed on 5 Oct 2026, 0 rose by a point or more and 25 fell by at least a point, most of those on facts crossing the 30-day re-verification window rather than on any new finding; no vendors were withdrawn. Every figure on this page is computed from the live index and the stored daily snapshot.
Published 5 Nov 2026 · 57 vendors scored · 664 certificates · 7 min read · every figure computed from the live index
Edited by Slava Melikov, Research Editor · reviewed 5 Nov 2026
The top 10 in November
| # | Vendor | Score | 5 Oct 2026 | Certificates | Testing laboratory |
|---|---|---|---|---|---|
| 1▲1 |  Origin Labs | 89.116 of 19 signals stale | 94.2 · #2−5.1 | 25 | ILS Laboratories· ISO 17025 |
| 2▼1 |  Next Gen Peptides | 87.717 of 19 signals stale | 96.1 · #1−8.4 | 114 | ILS Laboratories· ISO 17025 |
| 3▲3 |  ZC Labs | 87.216 of 19 signals stale | 86.9 · #6+0.3 | 39 | ILS Laboratories· ISO 17025 |
| 4▼1 |  Amino Club | 86.118 of 19 signals stale | 90.8 · #3−4.7 | 23 | ILS Laboratories· ISO 17025 |
| 5▼1 |  PeptidePlugs | 82.617 of 19 signals stale | 90.7 · #4−8.1 | 70 | Freedom Diagnostics Testing |
| 6▲5 |  Modern Aminos | 79.718 of 19 signals stale | 81.3 · #11−1.6 | 30 | Vanguard Laboratory· ISO 17025 |
| 7▲2 |  Bench Grade Peptides | 79.415 of 19 signals stale | 84.2 · #9−4.8 | 53 | AV Analytics |
| 8▼1 |  Hydro Research Peptides | 78.715 of 19 signals stale | 85.9 · #7−7.2 | 32 | ILS Laboratories· ISO 17025 |
| 9▲3 |  Stealth Research Labs | 78.113 of 19 signals stale | 80.1 · #12−2.0 | 10 | Bioviridian Inc. |
| 10▼2 |  One Aminos | 7816 of 19 signals stale | 85.6 · #8−7.6 | 27 | United Laboratories |
Scores are 0–100, computed from stored data points rather than assigned. The second score column is the stored daily snapshot of 5 Oct 2026, the first day the index ran rubric v1.11.0, with the rank held that day; the arrows difference today against it. A score marked “signals stale” carries data points captured more than 30 days ago, which keep 90% of their credit until re-verified. A laboratory is named only where the name on the certificate resolves to one in the registry. Every certificate counted here is readable at /certificates.
Next Gen Peptides led on 5 Oct 2026 at 96.1 and stands at 87.7 today, rank 2, with 17 of its 19 scored signals past the 30-day window. Origin Labs moved from rank 2 to the top on a score that itself moved −5.1: the change at the top is one vendor’s facts ageing faster than another’s, not a new finding about either.
Fourteen new vendors, none of them at the top
The fourteen vendors analysed in October enter the record with 238 lot-level certificates, and the strongest of them would, on evidence alone, sit first on the board above: Quanta Nova’s evidence score of 95.4 is higher than Origin Labs’ 89.1. It publishes at 66.8 and rank 23 instead, and the reason is the rubric’s newest rule. Since 30 Oct 2026, a vendor’s published score is its evidence score times a tenure factor: 70% on the day the profile is published, rising in a straight line to 100% after 120 days listed. A vendor that stays listed without an adverse finding climbs every day; one with a perfect evidence score enters at 70. At its current evidence, Quanta Nova would pass Origin Labs after 94 days if neither record changed.
Every other input to the score is a snapshot of what a vendor publishes on the day it is read, and a snapshot cannot tell a seller that has been careful for years from one that has been careful for a launch. Certificates can be commissioned for an opening, an address published and later withdrawn, a laboratory changed once the profile is up. Months under observation are the one input that cannot be arranged in advance, so they are what the rule withholds. The 57 vendors already on the board were admitted under the earlier rubric and keep their full evidence scores; the rule reaches forward, not back.
| Vendor | Evidence | Score | Rank | Certificates | Testing laboratory |
|---|---|---|---|---|---|
| Quanta Nova | 95.4 | 66.8day 0 on publication | 23 | 21 | Vanguard Laboratory |
| Luv Aminos | 88.9 | 62.2day 0 on publication | 27 | 28 | Freedom Diagnostics Testing |
| Vortex Research | 88.5 | 62day 0 on publication | 28 | 7 | ILS Laboratories |
| Lotus Peptide | 85.2 | 59.6day 0 on publication | 32 | 10 | Freedom Diagnostics Testing |
| Peptide.Express | 83.7 | 58.6day 0 on publication | 35 | 7 | Mistral Diagnostics |
| VERATIS | 82.8 | 58day 0 on publication | 37 | 24 | Freedom Diagnostics Testing |
| Ouralus | 79.3 | 55.5day 0 on publication | 41 | 17 | Janoshik Analytical |
| Redline Bio Labs | 77.8 | 54.5day 0 on publication | 43 | 69 | SteriGenix |
| Glow Peptides | 76.1 | 53.3day 0 on publication | 45 | 34 | Freedom Diagnostics Testing |
| AminoWave Labs | 74.2 | 51.9day 0 on publication | 46 | 10 | Freedom Diagnostics Testing |
| Source Research | 68.7 | 48.1day 0 on publication | 49 | 5 | ILS Laboratories |
| Hermetica Research Labs | 68 | 47.6day 0 on publication | 50 | 2 | Janoshik Analytical |
| CaribePeptides | 64.2 | 44.9day 0 on publication | 52 | 4 | Freedom Diagnostics Testing |
| Peptide Warehouse | 34.1 | 23.9day 0 on publication | 62 | 0 | none on file |
“Evidence” is the weighted criteria alone; “Score” multiplies it by the tenure factor, so every score in this table climbs daily until day 120. Rank places each vendor among the 71 vendors scored together; the highest any of the fourteen reaches today is 23. The figures are those of the October analysis and will read live once each profile is public. What each vendor publishes, what its certificates show and why it scored what it did is in New peptide vendors, October 2026.
What moved since 5 Oct 2026
The October report was built on rubric v1.10.0. Rubric v1.11.0 took effect on 4 October, shortening the re-verification window to 30 days, and lowered most scores by a few points on the same evidence. So the comparison here starts on 5 Oct 2026, the first stored snapshot on the current rubric, and differences the live board against that day for the 57 vendors present in both. No rose by a point or more, 25 fell by at least a point, and 32 moved by less than a point either way.
Down: Next Gen Peptides −8.4 (17 stale), PeptidePlugs −8.1 (17 stale), One Aminos −7.6 (16 stale), Hydro Research Peptides −7.2 (15 stale), Transition Biotech −5.5 (17 stale) and Vial Drop Labs −5.4 (16 stale). Every one of these carries data points captured more than 30 days ago, which the rubric discounts to 90% of their credit until they are checked again. The larger part of each fall is that window closing; the rest is ordinary movement in price against the market median, dated on each profile. None of it is an adverse finding, and a re-verification restores the points. No vendor on this board acquired a regulatory or enforcement record this month.
How the ranking works now
Each vendor is scored 0–100 on six weighted criteria: testing transparency, documentation depth, price and value, track record, business transparency and commercial clarity. Every input is a stored data point with a source URL and a capture date; a value recorded without a source earns nothing but still counts against the denominator, so leaving a source out can never raise a score. The weighted criteria sum to the evidence score. For vendors published since 30 Oct 2026 the published score is that figure times the tenure factor described above; vendors published earlier carry their evidence score in full.
Commercial relationships cannot reach the scoring function: the input type forbids the field, so the code does not compile if it is passed. The whole rubric, including the tenure rule and the staleness window, is published at /methodology, every certificate at /certificates, and the dataset as CSV and JSON, where each vendor carries its evidence score, its tenure factor and the days it has been listed. If a figure here disagrees with the document behind it, the document is right.
Common questions
Who are the best peptide vendors in November 2026?
On published evidence, Origin Labs (89.1), Next Gen Peptides (87.7), ZC Labs (87.2), Amino Club (86.1) and PeptidePlugs (82.6) lead the PepIndex board of 57 scored vendors. "Best" here means best-evidenced: each score is computed from certificates, named laboratories, disclosed prices and corporate details that can be checked, not from reviews or reputation, and a vendor can be sound and still score lower by publishing less.
Which new peptide vendors were added in November 2026?
Quanta Nova, Luv Aminos, Vortex Research, Lotus Peptide, Peptide.Express, VERATIS, Ouralus, Redline Bio Labs, Glow Peptides, AminoWave Labs, Source Research, Hermetica Research Labs, CaribePeptides and Peptide Warehouse. Together they bring 238 lot-level certificates. Quanta Nova has the highest evidence score of the fourteen at 95.4, followed by Luv Aminos at 88.9; Peptide Warehouse enters with no certificate at all and the lowest evidence score at 34.1. Each has a full profile, and the companion report reads every one of their documents.
Why do new peptide vendors rank below older ones with weaker certificates?
Because every certificate, address and price is a snapshot of the day it was read, and a snapshot cannot tell a seller that has been careful for years from one that has been careful for a launch. Since 30 Oct 2026 a newly published vendor's evidence score is multiplied by a tenure factor: 70% on the day it is published, rising in a straight line to 100% after 120 days listed. A vendor that stays listed without an adverse finding climbs every day. Vendors published before that date were admitted under the earlier rubric and keep their full evidence score.
How are peptide vendors ranked on PepIndex?
On six weighted criteria: testing transparency, documentation depth, price and value, track record, business transparency and commercial clarity, computed from stored data points that each link to the document they came from. Those give an evidence score. For vendors published since 30 Oct 2026 the published score is that figure times the tenure factor for time in the index. Nothing is scored by hand, commercial relationships cannot reach the scoring function, and the whole dataset is downloadable as CSV and JSON.
Why did some vendor scores fall since October?
Mostly because facts aged past the rubric's 30-day re-verification window. A data point captured more than 30 days ago keeps 90% of its credit until it is checked again, so a vendor whose profile was last verified at the end of September loses a few points at the end of October without anything on its site changing. Next Gen Peptides (17 of 19 signals stale), PeptidePlugs (17 of 19 signals stale) and One Aminos (16 of 19 signals stale) are in that position. A re-verification restores the credit; no adverse finding is involved.
Where to go next
- The live ranking — this board, recomputed hourly
- New peptide vendors, October 2026 — every certificate of the fourteen, read
- Price per milligram — what each vendor charges, compared
- Time in the index — the tenure rule in full
PepIndex earns affiliate commission from some vendors listed here. Commercial relationships are structurally excluded from the score — they cannot raise or lower one — and are disclosed in full. Research peptides are not medicines and nothing here is medical advice.