CertaPeptides
Why CertaPeptides is a Top 5% supplier
On 4 Nov 2026 we ranked CertaPeptides 29th of the 892 shops we score, with 31 of 60. That put it in the top 5% of shops we score.
- Not yetOur lab test
- 8.8 / 20Reviews
- 3 / 15Community
- 18.9 / 25Certificates
We hold 55 of their lab certificates, from Janoshik.
The badge is for November 2026 only. Scores change when we find new certificates or reviews, so we check every month. No shop pays for its score or its badge. See each part of the score
Is CertaPeptides legit? What the records show
We have tracked CertaPeptides since Nov 2026 and follow 56 of their products, covering 23 peptides. Prices run from €14.49 to €212.99. On their own certificates, 34 of 44 measured vials are more than 3% over or under the amount on the label.
Check it yourself: find the report number or QR code on a certificate and look it up on the lab's own website.
Higher than 97% of the 894 shops we score
Max 60 until we lab-test them.
The shaded part is the shops CertaPeptides scores higher than.
Our lab testLocked / 40Not tested yet
We have not sent a CertaPeptides product to an independent lab yet, so these 40 points are locked. The lab report will go on this page when we do.
Reviews8.8 / 20High rating, some reviews
External review sites: ★ 4.6 ± 0.1 average, from 100–500 reviews. We show a range because sites round their ratings differently.
That gives 8.8 of 20. We discount review sites a little, so a strong record does not max this on its own.
Community3 / 15Forum talk is thin
Forum and Reddit talk about them is thin. Nobody has left a review on Peptide Scanner yet.
That gives 3 of 15.
Certificates18.9 / 2520 of 23 peptides covered
Publishing: 13.2 of 15. We hold 55 lab certificates from their website, naming Janoshik. We found 55 of the 55 on the issuing lab's own website (not every lab has a public lookup). 20 of the 23 peptides we track have a matching certificate from an independent lab (any size counts). 2 of the 55 certificates include a contamination test (endotoxin, sterility or heavy metals). 29 of 32 dated certificates were issued in the last 6 months. Newest: Oct 2026 (2 weeks old). Oldest: Mar 2026.
Claims match: 5.7 of 10. Their own certificates against their claims: 9 of 41 measured vials are within 3% of the label (26 overfilled, 6 underfilled); 0 of 48 certificates fall below 98% purity.
Their claims against their certificates: 34 of 44 measured vials off label.
A certificate is the shop's own document. It is not our test.
CertaPeptides reviews
No reviews on Peptide Scanner yet.
Bought from CertaPeptides?
Write a reviewCertaPeptides prices
Checked 7 Nov 2026
Show all 56 prices ↓Showing all 56 prices
Ships to: European Union, Switzerland, United Kingdom
Their certificates vs their claims
No site-wide purity promise found on their website. Vial content is still checked against the label.
- certificates read
- 47
- vials outside ±3% of label
- 34 / 44
- beyond ±10% (major)
- 19
- site-wide purity claim to check
- None
How this is checked
- Vial content
- Measured net peptide content against the size on the label. Within ±3% is on label, 3 to 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. 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. 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.
- Score
- These checks are 10 of the 25 certificate 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.
- Source and limits
- 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.
| Product | Label to measured | Purity | Main impurity | Lab | Certificate |
|---|---|---|---|---|---|
| 10mg | 10mg → 11.17mg Overfilled +11.7% | 99.841% | 0.16% not itemised | janoshik | Open certificate 10mg |
| BPC-157 - 10mg | 10mg → 13.07mg Overfilled +30.7% | 99.875% | 0.13% not itemised | janoshik | Open certificate BPC-157 - 10mg |
| BPC-157 10mg | 10mg → 12.98mg Overfilled +29.8% | 99.944% | 0.06% not itemised | janoshik | Open certificate BPC-157 10mg |
| BPC-157 5mg | 5mg → 5.62mg Overfilled +12.4% | 99.036% | 0.96% not itemised | janoshik | Open certificate BPC-157 5mg |
| Epithalon_ 50mg | 50mg → 44.05mg Underfilled -11.9% | 99.604% | 0.40% not itemised | janoshik | Open certificate Epithalon_ 50mg |
| KPV 10mg | 10mg → 11.93mg Overfilled +19.3% | 98.786% | 1.21% not itemised | janoshik | Open certificate KPV 10mg |
| Matrixyl - 10mg | 10mg → 13.45mg Overfilled +34.5% | 99.89% | 0.11% not itemised | janoshik | Open certificate Matrixyl - 10mg |
| Retatrutide 10mg | 10mg → 11.05mg Overfilled +10.5% | 99.163% | 0.84% not itemised | janoshik | Open certificate Retatrutide 10mg |
Show all 47 certificates read ↓Showing all 47 certificates read
| Product | Label to measured | Purity | Main impurity | Lab | Certificate |
|---|---|---|---|---|---|
| Retatrutide 15mg | 15mg → 16.55mg Overfilled +10.3% | 99.502% | 0.50% not itemised | janoshik | Open certificate Retatrutide 15mg |
| Retatrutide 15mg | 15mg → 20.14mg Overfilled +34.3% | 99.344% | 0.66% not itemised | janoshik | Open certificate Retatrutide 15mg |
| Retatrutide 20mg | 20mg → 22.96mg Overfilled +14.8% | 99.422% | 0.58% not itemised | janoshik | Open certificate Retatrutide 20mg |
| Retatrutide 5mg | 5mg → 5.79mg Overfilled +15.8% | 99.702% | 0.30% not itemised | janoshik | Open certificate Retatrutide 5mg |
| Retatrutide_ 30mg | 30mg → 33.91mg Overfilled +13.0% | 99.901% | 0.10% not itemised | janoshik | Open certificate Retatrutide_ 30mg |
| Selank 10mg | 10mg → 11.56mg Overfilled +15.6% | 99.788% | 0.21% not itemised | janoshik | Open certificate Selank 10mg |
| Selank 30mg | 30mg → 36.7mg Overfilled +22.3% | 99.163% | 0.84% not itemised | janoshik | Open certificate Selank 30mg |
| Semax 5mg | 5mg → 5.51mg Overfilled +10.2% | 98.55% | 1.45% not itemised | janoshik | Open certificate Semax 5mg |
| Thymalin - 10mg | 10mg → 11.56mg Overfilled +15.6% | 99.285% | 0.72% not itemised | janoshik | Open certificate Thymalin - 10mg |
| Thymosin 10mg | 10mg → 11.15mg Overfilled +11.5% | 99.672% | 0.33% not itemised | janoshik | Open certificate Thymosin 10mg |
| Thymosin_Alpha1_5mg | 5mg → 6.03mg Overfilled +20.6% | 99.631% | 0.37% not itemised | janoshik | Open certificate Thymosin_Alpha1_5mg |
| AHK-Cu 100mg | 100mg → 94.49mg Under label -5.5% | 99.12% | 0.88% not itemised | janoshik | Open certificate AHK-Cu 100mg |
| BPC-157 20mg | 20mg → 21.56mg Over label +7.8% | 99.623% | 0.38% not itemised | janoshik | Open certificate BPC-157 20mg |
| Epitalon 50mg | 50mg → 45.31mg Under label -9.4% | 98.005% | 2.00% not itemised | janoshik | Open certificate Epitalon 50mg |
| Epithalon 10mg | 10mg → 10.57mg Over label +5.7% | 98.158% | 1.84% not itemised | janoshik | Open certificate Epithalon 10mg |
| KissPeptin-10 10mg | 10mg → 10.94mg Over label +9.4% | 99.849% | 0.15% not itemised | janoshik | Open certificate KissPeptin-10 10mg |
| LL-37 5mg | 5mg → 4.74mg Under label -5.2% | 99.379% | 0.62% not itemised | janoshik | Open certificate LL-37 5mg |
| MT-2 10mg | 10mg → 10.45mg Over label +4.5% | 99.455% | 0.55% not itemised | janoshik | Open certificate MT-2 10mg |
| Melanotan1_ 10mg | 10mg → 9.61mg Under label -3.9% | 99.645% | 0.36% not itemised | janoshik | Open certificate Melanotan1_ 10mg |
| Pinealon 10mg | 10mg → 10.58mg Over label +5.8% | 98.094% | 1.91% not itemised | janoshik | Open certificate Pinealon 10mg |
| Retatrutide 10mg | 10mg → 9.61mg Under label -3.9% | 99.427% | 0.57% not itemised | janoshik | Open certificate Retatrutide 10mg |
| Retatrutide 30mg | 30mg → 32.96mg Over label +9.9% | 99.639% | 0.36% not itemised | janoshik | Open certificate Retatrutide 30mg |
| Retatrutide 5mg | 5mg → 5.17mg Over label +3.4% | 99.268% | 0.73% not itemised | janoshik | Open certificate Retatrutide 5mg |
| Retatrutide_50mg | 50mg → 53.24mg Over label +6.5% | 99.294% | 0.71% not itemised | janoshik | Open certificate Retatrutide_50mg |
| SNAP-8 10mg | 10mg → 10.78mg Over label +7.8% | 99.931% | 0.07% not itemised | janoshik | Open certificate SNAP-8 10mg |
| Semax_ 10mg | 10mg → 10.93mg Over label +9.3% | 99.477% | 0.52% not itemised | janoshik | Open certificate Semax_ 10mg |
| Adamax - 10mg | 10mg → 10.02mg On label +0.2% | 98.64% | 1.36% not itemised | janoshik | Open certificate Adamax - 10mg |
| Epitalon 50mg | 50mg → 49.02mg On label -2.0% | 99.514% | 0.49% not itemised | janoshik | Open certificate Epitalon 50mg |
| GHK-CU 50mg | Not measured | 99.425% | 0.58% not itemised | janoshik | Open certificate GHK-CU 50mg |
| GHKCu_ 100mg | 100mg → 97.41mg On label -2.6% | 99.353% | 0.65% not itemised | janoshik | Open certificate GHKCu_ 100mg |
| Glutathione_1500mg | 1500mg → 1527.43mg On label +1.8% | 98.76% | 1.24% not itemised | janoshik | Open certificate Glutathione_1500mg |
| MOTS-C 10mg | 10mg → 10.09mg On label +0.9% | 99.301% | 0.70% not itemised | janoshik | Open certificate MOTS-C 10mg |
| MOTS-c 40mg | 40mg → 40.37mg On label +0.9% | 99.266% | 0.73% not itemised | janoshik | Open certificate MOTS-c 40mg |
| MT-2 (Melanotan 2 Acetate) 10mg | 10mg → 10.01mg On label +0.1% | 99.719% | 0.28% not itemised | janoshik | Open certificate MT-2 (Melanotan 2 Acetate) 10mg |
| PT-141 10mg | 10mg → 9.73mg On label -2.7% | 99.976% | 0.02% not itemised | janoshik | Open certificate PT-141 10mg |
| PT141_ 10mg | 10mg → 9.99mg On label -0.1% | 99.854% | 0.15% not itemised | janoshik | Open certificate PT141_ 10mg |
| Retatrutide 20mg | — → 19.72mg Not checked | 99.85% | 0.15% not itemised | janoshik | Open certificate Retatrutide 20mg |
| SS-31 | — → 53.35mg Not checked | 99.634% | 0.37% not itemised | janoshik | Open certificate SS-31 |
| SS-31 - 10mg | 10mg → 9.78mg On label -2.2% | 99.863% | 0.14% not itemised | janoshik | Open certificate SS-31 - 10mg |
CertaPeptides FAQ
Is CertaPeptides legit?
We score CertaPeptides 31 of 60, from reviews, community posts and the certificates they publish. We have not lab-tested them yet. The reasons for each part of the score are in the verdict above.
Does CertaPeptides publish lab reports (COAs)?
Yes. We hold 55 certificates from their website. They cover 20 of the 23 peptides we track. Labs named on them: Janoshik. We found 55 of them on the lab's own website. A certificate is the shop's own document, not our test.
How much does CertaPeptides charge?
On 7 Nov 2026 we tracked 56 prices from €14.49 to €212.99. The cheapest is DSIP at €14.49. The full list is in the price table above.
Where does CertaPeptides ship?
They ship to European Union, Switzerland, United Kingdom.
Has Peptide Scanner tested CertaPeptides?
Not yet. Lab results are worth 40 points, and those stay locked until we test one of their products at an independent lab.
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