How we score peptide vendors

Our scoring system uses 5 sources, all traceable to a third party. Composite is transparent, with reproducible math.

Our mission

TriedRx exists because the peptide market has an accountability problem. Vendors make claims about purity and potency that consumers can't verify. “99% pure” is printed on labels that have never seen the inside of a lab.

We aggregate published lab data, vendor-published certificates of analysis, and community sentiment from public forums. We compute composite scores using a transparent formula, with weights that anyone can audit. Every datapoint we cite came from a third party. We publish every result — including the failures. We don't take vendor money. If a vendor scores well, it's because their product tested well. Period.

Sources we monitor

  • Publicly available certificates of analysis (COAs) from vendor websites and product listings
  • Independent peptide-testing programs that publish lab results in public databases
  • Community discussion across r/Peptides, r/SaferPeptides, r/Tirzepatide, and r/Peptidesource
  • Trustpilot and similar review platforms for COA verification
  • Vendor websites for current pricing, dosing labels, COA transparency, and shipping policy

We do not run laboratory or mass-spectrometry testing. We compile the data, score the vendors, publish the rankings — and publish what's missing.

What we measure

Every sample we cite has three parameters captured from a lab report.

Identity

Confirms the molecule is what the vendor claims. Done by mass spec or chromatographic comparison.

Purity

Quantitative percentage of target molecule vs. impurities. Most labs use HPLC and report area-under-curve.

Potency (Quantity)

Compares actual milligram count vs. label claim. Drives the verified $/mg adjustment.

Scoring system (0–10 scale)

Each vendor-per-peptide score is composed of five sub-scores, weighted as below.

COMPONENTWEIGHTWHAT IT MEASURES
Lab quality 40% Avg purity weighted by sample size, recency decay, and consistency penalty
Community sentiment 20% Reddit ratio (positive vs negative) with fraud flag & shipping complaint penalties; 20+ mentions required
COA transparency 15% Per-batch COAs · HPLC + MS · endotoxin · independent cross-check · recency
Reliability 15% Shipping speed · stockouts · vendor tenure
Verified $/mg 10% List price adjusted by lab-tested quantity ratio vs. market median for that peptide

Sub-scores with insufficient data are null; their weight redistributes proportionally across the others. Vendors with fewer than 2 lab tests AND no recent COA are unrankable and hidden.

Grade assignments

  • A
    9.0+
    Outstanding across all five sub-scores. Lab data is consistently above 9.0; pricing is competitive.
  • B+
    7.5 - 8.9
    Above average across most sub-scores. Reliable with minor weaknesses.
  • B
    6.5 - 7.4
    Solid in the ranked range; lab data and price-per-mg generally fair.
  • C
    5.0 - 6.4
    Mixed signals. Some data points score well; others have variance.
  • D
    3.5 - 4.9
    Below acceptable thresholds across many sub-scores.
  • E
    2.0 - 3.4
    Major deficits. Significant negative sentiment or very low purity scores.
  • F
    < 2.0
    Active fraud signals or stale COAs. Avoid; suspects in fraud reports or shipping non-fulfillment.

How often we refresh

  • Lab data syncs daily at 03:00 UTC.
  • Vendor websites sync daily at 04:30 UTC (prices, in-stock status).
  • Composite recompute runs daily at 05:00 UTC.
  • Reddit sentiment ingest runs Sunday 02:00 UTC.
  • COA cross-check monthly (1st of month).

Vendor inclusion criteria

  • Per-peptide rankings require at least 2 lab tests for that peptide OR a verified COA plus 20+ sentiment mentions.
  • Vendor directory requires at least 5 total tests across all peptides combined.
  • Composite score requires at least one non-null sub-score to compute.

Conflicts of interest

Zero. We accept no vendor payments, sponsorships, advertising, or affiliate revenue from peptide vendors. Vendors cannot influence their scores, request removal, or pay for priority placement. We have never operated a peptide brand.

Corrections policy

Email corrections@triedrx.com with the URL, the specific datapoint, and the source you believe is more accurate. We respond within 14 days and publish the correction alongside the original error for transparency.

What we don't do

  • We do not run chromatography, mass spectrometry, or other in-house testing. Every test result we cite came from a third party.
  • We do not accept payment from vendors. No vendor has any influence on its score.
  • We do not publish numbers we cannot link to a source.
  • We do not give medical advice. The site is editorial research, not a substitute for a physician.

See a worked example: Peptide Partners review or BPC-157 vendor rankings.