Check report · Shop link

99%+ Purity

A permanent record of what we could see on 2026-09-20. Share it, cite it, or download it.

Shop link · researchpeptideslab.com
Strong · 8.1/10Grade BLayer 3 · Research-use-only supplier

Research Peptides Lab publishes third-party testing mentions from Freedom Diagnostics but certificates were not read in this run.

Research Peptides Lab operates a storefront over HTTPS with email contact routes. The vendor publishes mentions of independent testing by Freedom Diagnostics, listing HPLC and mass spectrometry methods alongside lot numbers. Certificates of analysis were not opened or read in this run.

Confidence: high · 9 pages read · 1 document opened · 2026-09-20 13:46 UTC

We could read most of what matters, lab evidence included.

Strong. Top quarter of the 124 research suppliers we have scored (median 6.0).

How to read this score
05.06.58.010
  • Strong8.0 – 10
  • Good6.5 – 7.9
  • Mixed5.0 – 6.4
  • Weak0 – 4.9
Against the research-supplier pool: median 6.0, lower quarter below 4.1, top quarter above 8.1, from 124 scored checks. This one is 8.1 Top quarter of the 124 research suppliers we have scored (median 6.0). The dashed line marks the median.
What to look at before you buy
  1. 1No certificate links were directly read in this run to verify identity and purity.
  2. 2The storefront mentions a 60-day money-back guarantee on product pages, but the shipping and returns policy states returns are not accepted once items are delivered.
How the score is built

Cold chain, packaging, transit times and returns — what happens to the vial between their freezer and your door.

  • Cold chain and storageFlagged

    Nothing published about storage temperature or cold shipping. Peptides degrade with heat, and the transit leg is where most of it happens.

  • Shipping detailClear

    The seller offers standard domestic shipping with free shipping over $150.

  • Returns and refundsFlagged

    The shipping and returns page states no returns are accepted after delivery due to research material chain of custody, while a product page mentions a 60-day money-back guarantee.

Certificates we opened
  • COAs

    Opened publicly, contents not readable. No lot or batch reference.

    The link returns text/html; charset=utf-8 rather than a certificate file we can read.

Social proof evidence
Weak signal · 12% of the score

Third-party ratings and public threads, read directly at the moment of this check. They are easy to buy and easy to brigade, so they are weighted low and can never overturn a lab-evidence flag. Every source below is also logged in the evidence trail.

Audit log — what we consulted

Every claim in this report traces to one of the items above. Expand a row to see the material it is based on.

Confidence breakdown

The score is a weighted mean over the pillars we could actually read — 88% of the model on this run. Anything we could not see is left out of the maths rather than counted against the seller.

Lab evidence2.90 of 8.1 points · 39% of this score

Model weight 34% · pillar score 7.5/10 · 3 ok, 1 flagged, 2 unseen

Company reality2.73 of 8.1 points · 27% of this score

Model weight 24% · pillar score 10.0/10 · 5 ok, 0 flagged, 2 unseen

Handling standards2.05 of 8.1 points · 20% of this score

Model weight 18% · pillar score 10.0/10 · 3 ok, 0 flagged, 0 unseen

Shipping and storage0.45 of 8.1 points · 14% of this score

Model weight 12% · pillar score 3.3/10 · 1 ok, 2 flagged, 0 unseen

Third-party reputationnot visible · excluded

Model weight 12% · nothing readable · 0 ok, 0 flagged, 3 unseen

Inside the reputation pillar (12% of the model)

Reputation is deliberately the lightest pillar. Even a perfect rating cannot lift a report over a lab-evidence flag.

Cite this check

Paste the citation straight into a paper or a reference manager. Both files carry the run identifier and the timestamp of this report.

MyDosage. MyDosage supply check: 99%+ Purity (8.1/10). 2026-09-20. https://mydosage.com/c/6f182e20-1cbf-4286-8c94-a6c47f088829
Take the whole file with you

The pack is one PDF: the verdict page plus an appendix of every cited page, document and social-proof source with the text we read. The data exports carry the same thing in machine form — inputs, every source with its timestamp and confidence weight, and the full scoring breakdown.

Citable PDF
XRedditWhatsAppLinkedInTelegram Email One permanent link, tagged per channel