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Claims vs COA / Peptide Source

Peptide Source: claims vs COA

No site-wide purity promise found on the website. Vial content is still checked against the label.
31
certificates read
10 / 16
vials outside ±3% of label
2
beyond ±10% (major)
—
below advertised purity
ProductLabel → measuredPurityMain impurityLabCOA
img_2457.jpeg
5mg → 6.32mg
Overfilled +26.4%
99.7%
0.30% not itemisedbioviridianOpen
img_2251.jpeg
2mg → 2.42mg
Overfilled +21.0%
98.7%
1.30% not itemisedbioviridianOpen
Group-113.webp
10mg → 10.57mg
Over label +5.7%
99.69%
0.31% not itemisedbioviridianOpen
Group-148.webp
30mg → 31.11mg
Over label +3.7%
99.82%
0.18% not itemisedbioviridianOpen
img_3295.jpeg
10mg → 10.67mg
Over label +6.7%
99.8%
0.20% not itemisedbioviridianOpen
img_2455.jpeg
5mg → 5.47mg
Over label +9.4%
99.8%
0.20% not itemisedbioviridianOpen
img_3311.jpeg
10mg → 10.74mg
Over label +7.4%
99.9%
0.10% not itemisedbioviridianOpen
img_2458.jpeg
20mg → 21.25mg
Over label +6.3%
99.8%
0.20% not itemisedbioviridianOpen
img_3710.jpeg
60mg → 57.67mg
Under label -3.9%
99.74%
0.26% not itemisedbioviridianOpen
Resource Gonadorelin Acetate 2mg
2mg → 1.88mg
Under label -6.0%
99.8%
0.20% not itemisedbioviridianOpen
img_1304.jpegNot measured
99.739%
0.26% not itemisedfreedom-diagnosticsOpen
COA-GHRP-2-1.webpNot measured
99.8%
0.20% not itemised—Open
Group-86-1.webpNot measured
99.799%
0.20% not itemisedfreedom-diagnosticsOpen
img_1298.jpegNot measured
99.011%
0.99% not itemisedfreedom-diagnosticsOpen
img_2220.jpegNot measured
99.907%
0.09% not itemisedfreedom-diagnosticsOpen
img_2245.jpegNot measured
98.7%
1.30% not itemisedbioviridianOpen
Group-109-1-1.webp
20mg → 20.33mg
On label +1.7%
99.74%
0.26% not itemisedbioviridianOpen
Group-58.webpNot measured
99.964%
0.04% not itemisedfreedom-diagnosticsOpen
img_2214.jpegNot measured
99.961%
0.04% not itemisedfreedom-diagnosticsOpen
img_3370.jpeg
50mg → 50.86mg
On label +1.7%
99.9%
0.10% not itemisedbioviridianOpen
Group-117-1.webp
50mg → 50.98mg
On label +2.0%
99.3%
0.70% not itemisedbioviridianOpen
img_2221.jpegNot measured
99.526%
0.47% not itemisedfreedom-diagnosticsOpen
img_3308.jpegNot measured
99.8%
0.20% not itemisedbioviridianOpen
img_3371.jpeg
500mg → 501.94mg
On label +0.4%
99.6%
0.40% not itemisedbioviridianOpen
img_2459.jpeg
15mg → 15.4mg
On label +2.7%
99.7%
0.30% not itemisedbioviridianOpen
img_3425.jpegNot measured
99.8%
0.20% not itemisedbioviridianOpen
Resource Epithalon 50
50mg → 48.8mg
On label -2.4%
99.8%
0.20% not itemisedbioviridianOpen
SomesNot measured
99.01%
0.99% not itemisedfreedom-diagnosticsOpen
SourceNot measured
99.928%
0.07% not itemisedfreedom-diagnosticsOpen
SourceNot measured
99.473%
0.53% not itemisedfreedom-diagnosticsOpen
SourceNot measured
99.972%
0.03% not itemisedfreedom-diagnosticsOpen

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.

Peptide Source supplier page

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