Claims vs COA / Zenith Bioscience

Zenith Bioscience: claims vs COA

No site-wide purity promise found on the website. Vial content is still checked against the label.

106

certificates read

0 / 0

vials outside ±3% of label

beyond ±10% (major)

—

below advertised purity

Product	Label → measured	Purity	Main impurity	Lab	COA
ZB2605090002.png	— → 72.4mg Not checked	—	—	—	Open
ZB2605090006.png	— → 10.93mg Not checked	99.912%	0.09% not itemised	—	Open
ZB2605140001.png	— → 11.84mg Not checked	99.893%	0.11% not itemised	—	Open
ZB2605140002.png	— → 52.13mg Not checked	99.768%	0.23% not itemised	—	Open
ZB2605140003.png	— → 5.46mg Not checked	99.88%	0.12% not itemised	—	Open
ZB2606040001.png	— → 37.72mg Not checked	99.559%	0.44% not itemised	—	Open
ZB2606040002.png	— → 20.73mg Not checked	99.716%	0.28% not itemised	—	Open
ZB2606040003.png	— → 10.61mg Not checked	99.825%	0.17% not itemised	—	Open
ZB2606040004.png	— → 507.23mg Not checked	99.433%	0.57% not itemised	—	Open
ZB2606040005.png	— → 11.19mg Not checked	99.654%	0.35% not itemised	—	Open
ZB2606040006.png	— → 48.34mg Not checked	99.606%	0.39% not itemised	—	Open
ZB2606040007.png	— → 13.56mg Not checked	99.541%	0.46% not itemised	—	Open
ZB2606040008.png	— → 24.95mg Not checked	99.501%	0.50% not itemised	—	Open
ZB2606040009.png	— → 37.13mg Not checked	—	—	—	Open
ZB2606040010.png	— → 40.98mg Not checked	99.657%	0.34% not itemised	—	Open
ZB2606040011.png	— → 12.68mg Not checked	99.736%	0.26% not itemised	—	Open
ZB2606040012.png	— → 1418.22mg Not checked	99.698%	0.30% not itemised	—	Open
ZB2606040013.png	— → 12.33mg Not checked	99.47%	0.53% not itemised	—	Open
ZB2606050001.png	— → 12.55mg Not checked	99.626%	0.37% not itemised	—	Open
ZB2606050002.png	— → 11.43mg Not checked	99.51%	0.49% not itemised	—	Open
ZB2606080001.png	— → 50.63mg Not checked	99.513%	0.49% not itemised	—	Open
ZB2606080002.png	— → 84.69mg Not checked	99.69%	0.31% not itemised	—	Open
ZB2606080003.png	— → 12.3mg Not checked	99.66%	0.34% not itemised	—	Open
ZB2606080004.png	— → 26.41mg Not checked	—	—	—	Open
ZB2606250002.png	— → 106.47mg Not checked	99.671%	0.33% not itemised	—	Open
ZB2606250003.png	— → 5.88mg Not checked	—	—	—	Open
ZB2606250004.png	— → 121mg Not checked	99.71%	0.29% not itemised	—	Open
ZB2607030001.png	— → 42.84mg Not checked	99.537%	0.46% not itemised	—	Open
ZB2607030002.png	— → 9.7mg Not checked	99.816%	0.18% not itemised	—	Open
ZB2607030003.png	— → 1494.53mg Not checked	99.51%	0.49% not itemised	—	Open
ZB2607030004.png	— → 52.38mg Not checked	99.862%	0.14% not itemised	—	Open
ZB2607100001.png	— → 10.6mg Not checked	—	—	—	Open
ZB2607100002.png	— → 76.27mg Not checked	99.591%	0.41% not itemised	—	Open
ZB2607100004.png	— → 10.95mg Not checked	99.447%	0.55% not itemised	—	Open
ZB2607140001.png	— → 62.93mg Not checked	—	—	—	Open
ZB2607140002.png	— → 11.48mg Not checked	99.636%	0.36% not itemised	—	Open
ZB2607200001.png	— → 9.5mg Not checked	—	—	—	Open
ZB2607200003.png	— → 22.18mg Not checked	99.6%	0.40% not itemised	—	Open
ZB2607200004.png	— → 83.47mg Not checked	99.665%	0.33% not itemised	—	Open
ZB2607200005.png	— → 10.5mg Not checked	—	—	—	Open
ZB2607200006.png	— → 51.36mg Not checked	99.441%	0.56% not itemised	—	Open
ZB2607200007.png	— → 10.82mg Not checked	—	—	—	Open
ZB2607200008.png	— → 9.37mg Not checked	—	—	—	Open
ZB2607200010.png	— → 10.57mg Not checked	—	—	—	Open
ZB2607200011.png	— → 10.75mg Not checked	—	—	—	Open
ZB2607260001.png	— → 9.32mg Not checked	—	—	—	Open
ZB2607270001.png	— → 11.06mg Not checked	99.61%	0.39% not itemised	—	Open
ZB2607270002.png	— → 10.44mg Not checked	—	—	—	Open
ZB2607270003.png	— → 10.03mg Not checked	99.409%	0.59% not itemised	—	Open
ZB2607270004.png	— → 10.82mg Not checked	—	—	—	Open
ZB2607270005.png	— → 12.2mg Not checked	99.624%	0.38% not itemised	—	Open
ZB2607270006.png	— → 50.23mg Not checked	99.314%	0.69% not itemised	—	Open
ZB2607270007.png	— → 9.7mg Not checked	—	—	—	Open
ZB2607270008.png	— → 22.29mg Not checked	99.744%	0.26% not itemised	—	Open
ZB2607310001.png	— → 20.79mg Not checked	99.47%	0.53% not itemised	—	Open
ZB2607310002.png	— → 9.87mg Not checked	99.823%	0.18% not itemised	—	Open
ZB2607310003.png	— → 32.1mg Not checked	99.596%	0.40% not itemised	—	Open
ZB2607310006.png	— → 10.55mg Not checked	99.621%	0.38% not itemised	—	Open
ZB2607310009.png	— → 11.75mg Not checked	99.721%	0.28% not itemised	—	Open
ZB2607310010.png	— → 10.55mg Not checked	99.509%	0.49% not itemised	—	Open
ZB2608100001.png	— → 10.44mg Not checked	99.559%	0.44% not itemised	—	Open
ZB2608100002.png	— → 10.77mg Not checked	—	—	—	Open
ZB2608110001.png	— → 519.35mg Not checked	99.462%	0.54% not itemised	—	Open
ZB2609050001.png	— → 10.91mg Not checked	99.69%	0.31% not itemised	—	Open
ZB2609090002.png	— → 10.77mg Not checked	99.59%	0.41% not itemised	—	Open
5-Amino-1MQ GE lwp hitizea Powder	— → 51.5mg Not checked	99.529%	0.47% not itemised	—	Open
78 Cag GE Cp hitizen power	— → 9.77mg Not checked	99.85%	0.15% not itemised	—	Open
AHK-Cu GE lwp hitizea Powder	— → 103.92mg Not checked	99.745%	0.25% not itemised	—	Open
ARA-290 GE lwp hitizea Powder	— → 9.63mg Not checked	99.626%	0.37% not itemised	—	Open
BPC-157 GE lwp hitizea Powder	— → 10.62mg Not checked	99.467%	0.53% not itemised	—	Open
BPC-157/TB-500 GE lwp hitizea Powder	Blend, per-component content not listed	99.517%	0.48% not itemised	—	Open
Epithalon GE Cp hitizen power	— → 52.26mg Not checked	99.852%	0.15% not itemised	—	Open
Ipamorein GE lwp hitizea Powder	— → 10.4mg Not checked	99.688%	0.31% not itemised	—	Open
KPV GE lwp hitizea Powder	— → 10.84mg Not checked	99.522%	0.48% not itemised	—	Open
MOTS-c GE Cp hitizen power	— → 42.25mg Not checked	99.945%	0.06% not itemised	—	Open
MOTS-c GE lwp hitizea Powder	— → 41.62mg Not checked	99.819%	0.18% not itemised	—	Open
MOTS-c GE lwp hitizea Powder	— → 10.23mg Not checked	99.578%	0.42% not itemised	—	Open
Melanotan-1 GE lwp hitizea Powder	— → 11.01mg Not checked	99.734%	0.27% not itemised	—	Open
Melanotan-2 GE Cp hitizen power	— → 9.64mg Not checked	99.819%	0.18% not itemised	—	Open
NAD+ GE Cp hitizen power	— → 529.9mg Not checked	99.835%	0.17% not itemised	—	Open
Selank GE Cp hitizen power	— → 11.41mg Not checked	99.792%	0.21% not itemised	—	Open
Selank GE lwp hitizea Powder	— → 11.79mg Not checked	99.807%	0.19% not itemised	—	Open
Semax GE Cp hitizen power	— → 9.81mg Not checked	99.801%	0.20% not itemised	—	Open
Snap-2 GE lwp hitizea Powder	— → 10.71mg Not checked	99.484%	0.52% not itemised	—	Open
ZB TES GE Cp hitizen power	— → 10.96mg Not checked	99.738%	0.26% not itemised	—	Open
ZB TES GE lwp hitizea Powder	— → 10.19mg Not checked	99.497%	0.50% not itemised	—	Open
ZB TES GE lwp hitizea Powder	— → 22.58mg Not checked	99.786%	0.21% not itemised	—	Open
ZLP RT GE Cp hitizen power	— → 11.98mg Not checked	99.836%	0.16% not itemised	—	Open
ZLP RT GE Cp hitizen power	— → 21.7mg Not checked	99.961%	0.04% not itemised	—	Open
ZLP RT GE Cp hitizen power	— → 34.78mg Not checked	99.876%	0.12% not itemised	—	Open
ZLP RT GE lwp hitizea Powder	— → 29.47mg Not checked	99.579%	0.42% not itemised	—	Open
ZLP RT GE lwp hitizea Powder	— → 10.26mg Not checked	99.719%	0.28% not itemised	—	Open
ZLP RT GE lwp hitizea Powder	— → 22.79mg Not checked	99.524%	0.48% not itemised	—	Open
ZLP RT GE lwp hitizea Powder	— → 31.71mg Not checked	99.767%	0.23% not itemised	—	Open
ZLP RT GE lwp hitizea Powder	— → 10.24mg Not checked	99.675%	0.33% not itemised	—	Open
Zip 12 GE lwp hitizea Powder	— → 22.62mg Not checked	99.489%	0.51% not itemised	—	Open
lOF-1LR GE Cp hitizen power	— → 1.1mg Not checked	99.687%	0.31% not itemised	—	Open
oHK-Cu GE Cp hitizen power	— → 107.44mg Not checked	99.917%	0.08% not itemised	—	Open
oHK-Cu GE lwp hitizea Powder	— → 51.15mg Not checked	99.584%	0.42% not itemised	—	Open
oHK-Cu GE lwp hitizea Powder	— → 104.2mg Not checked	99.444%	0.56% not itemised	—	Open
oHK-Cu GE lwp hitizea Powder	— → 52.44mg Not checked	99.689%	0.31% not itemised	—	Open
ss-21 GE Cp hitizen power	— → 9.45mg Not checked	99.814%	0.19% not itemised	—	Open
ss-21 GE lwp hitizea Powder	— → 10.46mg Not checked	99.6%	0.40% not itemised	—	Open
ve GE Cp hitizen power	— → 10.2mg Not checked	98.865%	1.14% not itemised	—	Open
ve GE lwp hitizea Powder	— → 10.64mg Not checked	99.519%	0.48% not itemised	—	Open
z8-31 GE lwp hitizea Powder	— → 48.89mg Not checked	99.508%	0.49% not itemised	—	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.

Zenith Bioscience supplier page