GL Peptides
Is GL Peptides legit? What the records show
We have tracked GL Peptides since Nov 2026 and follow 25 of their products, covering 21 peptides. Prices run from $24.99 to $174.99.
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 71% of the 894 shops we score
Max 60 until we lab-test them.
The shaded part is the shops GL Peptides scores higher than.
Our lab testLocked / 40Not tested yet
We have not sent a GL Peptides product to an independent lab yet, so these 40 points are locked. The lab report will go on this page when we do.
Reviews0 / 20No reviews found online
We found no reviews for them on external review sites.
That gives 0 of 20.
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 / 25Strong certificate record
Publishing: 11.8 of 15. We hold 40 lab certificates from their website. We found 40 of the 40 on the issuing lab's own website (not every lab has a public lookup). 7 of the 40 certificates include a contamination test (endotoxin, sterility or heavy metals).
Claims match: 6.2 of 10. Their own certificates against their claims: 3 of 22 certificates fall below the 99% purity they advertise.
Their claims against their certificates: 41 certificates read.
A certificate is the shop's own document. It is not our test.
GL Peptides reviews
No reviews on Peptide Scanner yet.
Bought from GL Peptides?
Write a reviewGL Peptides prices
Checked 7 Nov 2026
Show all 25 prices ↓Showing all 25 prices
Ships to: United States
Their certificates vs their claims
No site-wide purity promise found on their website. Vial content is still checked against the label.
- certificates read
- 41
- vials outside ±3% of label
- 0 / 0
- beyond ±10% (major)
- 0
- 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 |
|---|---|---|---|---|---|
| janoshik_19e0057e82b41fedf60e.png | Not measured | 98.334% | 1.67% not itemised | janoshik | Open certificate janoshik_19e0057e82b41fedf60e.png |
| janoshik_586a44e99300ff6d5724.png | Not measured | 99.015% | 0.98% not itemised | janoshik | Open certificate janoshik_586a44e99300ff6d5724.png |
| BPC-157 | — → 10.62mg Not checked | 98.185% | 1.81% not itemised | janoshik | Open certificate BPC-157 |
| CJC-1295 | — → 2.21mg Not checked | 99.328% | 0.67% not itemised | janoshik | Open certificate CJC-1295 |
| CJC-1295 DAC | Not measured | 99.533% | 0.47% not itemised | janoshik | Open certificate CJC-1295 DAC |
| DSIP | Not measured | 98.824% | 1.18% not itemised | janoshik | Open certificate DSIP |
| DSIP | — → 15.82mg Not checked | 98.536% | 1.46% not itemised | janoshik | Open certificate DSIP |
| DSIP | — → 12.44mg Not checked | 99.303% | 0.70% not itemised | janoshik | Open certificate DSIP |
Show all 41 certificates read ↓Showing all 41 certificates read
| Product | Label to measured | Purity | Main impurity | Lab | Certificate |
|---|---|---|---|---|---|
| GHK | — → 51.77mg Not checked | 99.771% | 0.23% not itemised | janoshik | Open certificate GHK |
| GHK-Cu | — → 64.17mg Not checked | 99.436% | 0.56% not itemised | janoshik | Open certificate GHK-Cu |
| Growth Hormone | — → 8.9mg Not checked | 95.884% | Dimer 1.179% | janoshik | Open certificate Growth Hormone |
| HGH 101U | Not measured | 97.316% | 2.68% not itemised | janoshik | Open certificate HGH 101U |
| IGF-1 LR3 | — → 0.92mg Not checked | 87.393% | 12.61% not itemised | janoshik | Open certificate IGF-1 LR3 |
| KPV 10 | — → 9.7mg Not checked | 99.181% | 0.82% not itemised | janoshik | Open certificate KPV 10 |
| Melanotan 2 | Not measured | 99.648% | 0.35% not itemised | janoshik | Open certificate Melanotan 2 |
| Melanotan 2 | — → 10.91mg Not checked | 99.833% | 0.17% not itemised | janoshik | Open certificate Melanotan 2 |
| PT-141 | — → 11.77mg Not checked | 99.944% | 0.06% not itemised | janoshik | Open certificate PT-141 |
| PT-141 | — → 10.7mg Not checked | 99.876% | 0.12% not itemised | janoshik | Open certificate PT-141 |
| PT-141 | Not measured | 99.804% | 0.20% not itemised | janoshik | Open certificate PT-141 |
| Retatrutide | — → 63.1mg Not checked | 99.83% | 0.17% not itemised | janoshik | Open certificate Retatrutide |
| Retatrutide | — → 12.55mg Not checked | 99.779% | 0.22% not itemised | janoshik | Open certificate Retatrutide |
| Retatrutide | — → 10.21mg Not checked | 99.931% | 0.07% not itemised | janoshik | Open certificate Retatrutide |
| Selank | Not measured | 99.824% | 0.18% not itemised | janoshik | Open certificate Selank |
| Selank | — → 11.91mg Not checked | 99.351% | 0.65% not itemised | janoshik | Open certificate Selank |
| Selank | — → 10.18mg Not checked | 99.324% | 0.68% not itemised | janoshik | Open certificate Selank |
| Semaglutide | — → 10.57mg Not checked | 99.715% | 0.28% not itemised | janoshik | Open certificate Semaglutide |
| Semaglutide | — → 8.97mg Not checked | 99.82% | 0.18% not itemised | janoshik | Open certificate Semaglutide |
| Sermorelin | Not measured | 99.191% | 0.81% not itemised | janoshik | Open certificate Sermorelin |
| Sermorelin | — → 11.44mg Not checked | 99.353% | 0.65% not itemised | janoshik | Open certificate Sermorelin |
| Sermorelin | — → 10.25mg Not checked | 98.219% | 1.78% not itemised | janoshik | Open certificate Sermorelin |
| TB-500 | — → 4.91mg Not checked | 93.086% | 6.91% not itemised | janoshik | Open certificate TB-500 |
| TB-500 (TB-4) | — → 6.02mg Not checked | 98.097% | 1.90% not itemised | janoshik | Open certificate TB-500 (TB-4) |
| Tirzepatide | — → 34.49mg Not checked | 99.528% | 0.47% not itemised | janoshik | Open certificate Tirzepatide |
| Tirzepatide | — → 10.84mg Not checked | 99.34% | 0.66% not itemised | janoshik | Open certificate Tirzepatide |
| Tirzepatide | — → 69.85mg Not checked | 99.905% | 0.09% not itemised | janoshik | Open certificate Tirzepatide |
| Tirzepatide | — → 34.77mg Not checked | 99.675% | 0.33% not itemised | janoshik | Open certificate Tirzepatide |
| Tirzepatide | — → 11.35mg Not checked | 99.909% | 0.09% not itemised | janoshik | Open certificate Tirzepatide |
| Tirzepatide | — → 64.64mg Not checked | 99.438% | 0.56% not itemised | janoshik | Open certificate Tirzepatide |
| lpamorelin | — → 10.76mg Not checked | 99.794% | 0.21% not itemised | janoshik | Open certificate lpamorelin |
| lpamorelin | — → 5.14mg Not checked | 99.835% | 0.17% not itemised | janoshik | Open certificate lpamorelin |
| mt-2 | — → 12.99mg Not checked | 99.83% | 0.17% not itemised | janoshik | Open certificate mt-2 |
GL Peptides FAQ
Is GL Peptides legit?
We score GL Peptides 21 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 GL Peptides publish lab reports (COAs)?
Yes. We hold 40 certificates from their website. We found 40 of them on the lab's own website. A certificate is the shop's own document, not our test.
How much does GL Peptides charge?
On 7 Nov 2026 we tracked 25 prices from $24.99 to $174.99. The cheapest is TB-500 at $24.99. The full list is in the price table above.
Where does GL Peptides ship?
They ship to United States.
Has Peptide Scanner tested GL Peptides?
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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