Claims vs COA / Solyn Peptides
Solyn Peptides: claims vs COA
No site-wide purity promise found on the website. Vial content is still checked against the label. The site does mention 99.8% purity for an individual product: “…ot COA-published Browse 3 compounds → Add a compound GLP3-R 99.8% purity · Lot 2607-209 · COA From $ 65.00 3 sizes Choose size GLP2-…” Source (read 2026-09-25)
43
certificates read
29 / 34
vials outside ±3% of label
19
beyond ±10% (major)
—
below advertised purity
| Product | Label → measured | Purity | Main impurity | Lab | COA |
|---|---|---|---|---|---|
| AOD-9604 | 5mg → 6.14mg Overfilled +22.8% | 99.1% | Trifluoroacetic 0.1% | vanguard | Open |
| Adamax | 10mg → 11.72mg Overfilled +17.2% | 99.658% | Trifluoroacetic 0.1% | vanguard | Open |
| BPC-157/TB-500 | BPC-157: 10mg → 12.77mg Overfilled +27.7% TB-500: 10mg → 12.49mg Overfilled +24.9% | 99.357% | Trifluoroacetic 0.1% | vanguard | Open |
| Epithalon | 50mg → 59.28mg Overfilled +18.6% | 99.08% | Trifluoroacetic 0.1% | vanguard | Open |
| GHK-Cu | 50mg → 60.29mg Overfilled +20.6% | 99.599% | Trifluoroacetic 0.1% | vanguard | Open |
| GLP-3R | 20mg → 22.32mg Overfilled +11.6% | — | Trifluoroacetic 0.1% | vanguard | Open |
| GLP2T | 30mg → 34.94mg Overfilled +16.5% | 99.76% | Trifluoroacetic 0.1% | vanguard | Open |
| Ipamorelin | 10mg → 11.22mg Overfilled +12.2% | 99.17% | 0.83% not itemised | vanguard | Open |
| KPV | 10mg → 12.96mg Overfilled +29.6% | 99.51% | Trifluoroacetic 0.1% | vanguard | Open |
| Melanotan-1 | 10mg → 11.16mg Overfilled +11.6% | 99.44% | Trifluoroacetic 0.1% | vanguard | Open |
| NAD+ | 500mg → 729mg Overfilled +45.8% | 97.03% | Trifluoroacetic 0.1% | vanguard | Open |
| NAD+ | 1000mg → 871mg Underfilled -12.9% | 96.1% | Trifluoroacetic 0.1% | vanguard | Open |
| PT-141 | 10mg → 11.03mg Overfilled +10.3% | 99.16% | 0.84% not itemised | vanguard | Open |
| PT-141 | 10mg → 12.79mg Overfilled +27.9% | 99.593% | Trifluoroacetic 0.1% | vanguard | Open |
| Selank | 10mg → 12.34mg Overfilled +23.4% | 99.737% | Trifluoroacetic 0.1% | vanguard | Open |
| Semax | 10mg → 11.33mg Overfilled +13.3% | 99.781% | Trifluoroacetic 0.1% | vanguard | Open |
| TB-500 | 10mg → 11.06mg Overfilled +10.6% | >99.8% | under 0.20% not itemised | vanguard | Open |
| TB-500 | 10mg → 11.16mg Overfilled +11.6% | 99.44% | Trifluoroacetic 0.1% | vanguard | Open |
| Tesamorelin | 10mg → 11.6mg Overfilled +16.0% | 99.45% | Trifluoroacetic 0.1% | vanguard | Open |
| ARA-290 | 10mg → 10.41mg Over label +4.1% | 99.494% | Trifluoroacetic 0.1% | vanguard | Open |
| BPC-157 | 10mg → 10.82mg Over label +8.2% | >99.8% | under 0.20% not itemised | vanguard | Open |
| BPC-157 | 10mg → 10.6mg Over label +6.0% | >99.8% | Trifluoroacetic 0.1% | vanguard | Open |
| GHK-Cu | 50mg → 54.64mg Over label +9.3% | >99.8% | under 0.20% not itemised | vanguard | Open |
| MOTS-C | 40mg → 38.2mg Under label -4.5% | 98.35% | 1.65% not itemised | vanguard | Open |
| MOTS-c | 40mg → 36.99mg Under label -7.5% | 99.04% | 0.96% not itemised | vanguard | Open |
| NAD+ | 400mg → 434mg Over label +8.5% | 98.26% | 1.74% not itemised | vanguard | Open |
| Sermorelin | 10mg → 10.7mg Over label +7.0% | >99.8% | under 0.20% not itemised | vanguard | Open |
| Tesamorelin | 10mg → 10.71mg Over label +7.1% | 99.05% | 0.95% not itemised | vanguard | Open |
| Thymosin | 10mg → 10.48mg Over label +4.8% | 99.03% | Trifluoroacetic 0.1% | vanguard | Open |
| 5-Amino-1MQ | 80mg → 79.37mg On label -0.8% | >99.8% | Trifluoroacetic 0.1% | vanguard | Open |
| BPC-157/TB-500 | Blend, per-component content not listed | >99% | under 1.00% not itemised | vanguard | Open |
| BPC-157/TB-500 | Blend, per-component content not listed | >99.5% | under 0.50% not itemised | vanguard | Open |
| CJC-1295/ Ipamorelin | Blend, per-component content not listed | 98.58% | Trifluoroacetic 0.1% | vanguard | Open |
| CJC-1295/Ipamorelin | Blend, per-component content not listed | 99.15% | 0.85% not itemised | vanguard | Open |
| Cartalax | 20mg → 19.43mg On label -2.9% | >99.8% | Trifluoroacetic 0.1% | vanguard | Open |
| GLOW | Blend, per-component content not listed | >99.5% | under 0.50% not itemised | vanguard | Open |
| GLOW | Blend, per-component content not listed | >99.5% | Trifluoroacetic 0.1% | vanguard | Open |
| Glutathione | 1500mg → 1477mg On label -1.5% | 99.15% | Trifluoroacetic 0.1% | vanguard | Open |
| KLOW | Blend, per-component content not listed | >99.5% | under 0.50% not itemised | vanguard | Open |
| KLOW | Blend, per-component content not listed | 99.55% | Trifluoroacetic 0.1% | vanguard | Open |
| MOTS-c | 40mg → 40.79mg On label +2.0% | 99.502% | Trifluoroacetic 0.1% | vanguard | Open |
| Tesamorelin/Ipamorelin | Blend, per-component content not listed | 99.22% | Trifluoroacetic 0.1% | vanguard | Open |
| Thymosin | 10mg → 10.05mg On label +0.5% | >99.8% | Trifluoroacetic 0.1% | vanguard | Open |
How this is checked
- Vial content. Measured net peptide content against the size on the label. Within ±3% is on label, 3–10% is off label, beyond ±10% is a major deviation (under- or overfilled). When a certificate weighs several vials of the batch, the vial farthest from the label is the one judged, and with several purity results the lowest counts. Blends are only checked when the certificate lists each component.
- Purity. HPLC purity on each certificate against the purity the supplier promises site-wide on its own website. Up to 1 point below the claim is amber, more than that is red. Only a direct promise counts (“99%+ purity guaranteed”); explanations of what purity means, one product's figure and page code are not treated as a claim. A certificate that reports only a bound (“>99%”) is judged only when the bound meets the claim, and a specification line is never read as a result.
- Whose certificate. A certificate is only read once our client-identity review has looked at it, and one issued to a different company is left out — whether the automatic check or a manual review found it. A certificate issued to the company that runs the supplier's own website counts as the supplier's. A file hosted on another supplier's website is not counted for this one. The same rules decide which certificates appear on supplier and product pages. Only peptide certificates are read: bacteriostatic water, acetic acid and other diluents are left out, and so are product data sheets, which state a specification rather than a batch result.
- Main impurity. Shown when the certificate itemises it: a named impurity (TFA, deletion sequence, oxidation…) or the largest secondary peak in the HPLC peak table. Most certificates report only a purity figure, so the rest of the sample is not itemised.
- Trust Score. These checks are 10 of the 25 Transparency points: vial content 7 (full credit within ±3%, half up to ±10%, none beyond, over- and underfilled alike), purity 3 (98% is the bar when a supplier advertises no figure). Fewer than 5 readable results gives half credit rather than a guess.
- These are the supplier's own published certificates, read automatically from the PDF or image. Janoshik results tables are read twice from the image, cell by cell, and a figure the two readings disagree on is left out rather than guessed. A certificate covers one batch on one date. We have not tested these batches ourselves.