Prime Peptides US
Is Prime Peptides US legit? What the records show
We have tracked Prime Peptides US since Sep 2026 and follow 14 of their products. Prices run from $40.00 to $135.00. On their own certificates, 8 of 10 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 76% of the 894 shops we score
Max 60 until we lab-test them.
The shaded part is the shops Prime Peptides US scores higher than.
Our lab testLocked / 40Not tested yet
We have not sent a Prime Peptides US 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 / 15Serious concerns raised
Forum and Reddit talk raises serious concerns. Nobody has left a review on Peptide Scanner yet.
That gives 3 of 15.
Certificates19.1 / 256 of 14 peptides covered
Publishing: 13.8 of 15. We hold 14 lab certificates from their website, naming Freedom Diagnostics, Bioviridians and Horizon Analytical. We found 7 of the 14 on the issuing lab's own website (not every lab has a public lookup). 6 of the 14 peptides we track have a matching certificate from an independent lab (any size counts). 13 of the 14 certificates include a contamination test (endotoxin, sterility or heavy metals). 6 of 11 dated certificates were issued in the last 6 months. Newest: Sept 2026 (2 months old). Oldest: Mar 2026.
Claims match: 5.3 of 10. Their own certificates against their claims: 2 of 9 measured vials are within 3% of the label (7 overfilled); 0 of 14 certificates fall below 98% purity.
Their claims against their certificates: 8 of 10 measured vials off label.
A certificate is the shop's own document. It is not our test.
Prime Peptides US reviews
No reviews on Peptide Scanner yet.
Bought from Prime Peptides US?
Write a reviewPrime Peptides US prices
Checked 7 Nov 2026
Show all 14 prices ↓Showing all 14 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
- 14
- vials outside ±3% of label
- 8 / 10
- beyond ±10% (major)
- 6
- 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 |
|---|---|---|---|---|---|
| BPC-157 10mg | 10mg → 11.08mg Overfilled +10.8% | 99.63% | 0.37% not itemised | freedom-diagnostics | Open certificate BPC-157 10mg |
| Reta 30mg | 30mg → 36.37mg Overfilled +21.2% | 99.97% | 0.03% not itemised | freedom-diagnostics | Open certificate Reta 30mg |
| Sema, 10mg | 10mg → 11.43mg Overfilled +14.3% | 99.91% | 0.09% not itemised | freedom-diagnostics | Open certificate Sema, 10mg |
| Sema, 15mg | 15mg → 17.5mg Overfilled +16.7% | 99.83% | 0.17% not itemised | freedom-diagnostics | Open certificate Sema, 15mg |
| Semaglutide | 5mg → 5.51mg Overfilled +10.2% | 99.02% | 0.98% not itemised | vanguard | Open certificate Semaglutide |
| Tirz 30mg | 30mg → 34.99mg Overfilled +16.6% | 99.91% | 0.09% not itemised | freedom-diagnostics | Open certificate Tirz 30mg |
| Ipamorelin · 10mgIpa-April-Testing-.pdf | 10mg → 10.44mg Over label +4.4% | 99.8% | 0.20% not itemised | bioviridian | Open certificate Ipamorelin · 10mg |
| Tirz 30mg | 30mg → 31.2mg Over label +4.0% | 99.97% | 0.03% not itemised | freedom-diagnostics | Open certificate Tirz 30mg |
Show all 14 certificates read ↓Showing all 14 certificates read
| Product | Label to measured | Purity | Main impurity | Lab | Certificate |
|---|---|---|---|---|---|
| Glutathione · 1500mgGlutathione-April-Test.pdf | 1500mg → 1508.43mg On label +0.6% | 99.8% | 0.20% not itemised | bioviridian | Open certificate Glutathione · 1500mg |
| NAD+ · 1000mgNAD-March-Test-BIOVIRIDIAN.pdf | Not measured | 99.8% | 0.20% not itemised | bioviridian | Open certificate NAD+ · 1000mg |
| Tirzepatide · 10mgTir-10mg-April-Testing-.pdf | Not measured | 99.8% | 0.20% not itemised | bioviridian | Open certificate Tirzepatide · 10mg |
| GHK-Cu | 100mg → 99.5mg On label -0.5% | 99.48% | 0.52% not itemised | horizon-analytical | Open certificate GHK-Cu |
| Retatrutide | Not measured | 99.786% | 0.21% not itemised | Unknown | Open certificate Retatrutide |
| Wolverine 10/10 | Blend, per-component content not listed | 99.41% | 0.59% not itemised | freedom-diagnostics | Open certificate Wolverine 10/10 |
Prime Peptides US FAQ
Is Prime Peptides US legit?
We score Prime Peptides US 22 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 Prime Peptides US publish lab reports (COAs)?
Yes. We hold 14 certificates from their website. They cover 6 of the 14 peptides we track. Labs named on them: Freedom Diagnostics, Bioviridians and Horizon Analytical. We found 7 of them on the lab's own website. A certificate is the shop's own document, not our test.
How much does Prime Peptides US charge?
On 7 Nov 2026 we tracked 14 prices from $40 to $135. The cheapest is Melanotan II at $40. The full list is in the price table above.
Where does Prime Peptides US ship?
They ship to United States.
Has Peptide Scanner tested Prime Peptides US?
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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