synthesispeptides.io
A permanent record of what we could see on 2026-09-17. Share it, cite it, or download it.
Synthesis Peptides provides third-party testing reports from independent labs with batch-specific purity and safety panels.
Synthesis Peptides sells research peptides and tablets online with credit card processing and shipping from Las Vegas, NV. The vendor publishes third-party Certificates of Analysis from independent laboratories: Freedom Diagnostics Testing verified Retatrutide 10mg (lot 3GR10926, 99.75% purity) and BPC-157/TB-500 blend (lot WOLV20926, 99.76% purity); Kovera Labs verified Tesamorelin (lot TS10626, 99.359% purity) and GHK-Cu (lot GHK50626, 99.678% purity); Nova Labs verified BPC-157 (lot BPC157-052024, 99.6% purity). Tested panels include identity, purity, net content, heavy metals, endotoxins, and microbial safety.
Confidence: high · 11 pages read · 5 documents opened · 2026-09-17 17:38 UTC
We could read most of what matters, lab evidence included.
Strong. Top quarter of the 133 research suppliers we have scored (median 6.1).
- Strong8.0 – 10
- Good6.5 – 7.9
- Mixed5.0 – 6.4
- Weak0 – 4.9
- 1All sales are final with no general returns or exchanges accepted.
Cold chain, packaging, transit times and returns — what happens to the vial between their freezer and your door.
- Cold chain and storageNot visible
Storage guidelines (2–8 °C) are stated on product pages, but no temperature-controlled shipping methods are specified.
- Shipping detailClear
Ships from Las Vegas, NV via USPS and UPS with priority tracking.
- Returns and refundsFlagged
All sales are final; damages or errors must be reported within 48 to 72 hours for replacement consideration.
- View COA
Read in full. Tied to lot 3GR10926. Tested about 1 months ago.
RETATRUTIDE 10mg · 99.75% purity · Freedom Diagnostics Testing (outside lab) · LC-MS, HPLC-UV, ICP-MS · Identity, Purity, Elemental Impurities, Net Content
- View COA
Read in full. Tied to lot TS10626. Tested about 4 months ago.
Tesamorelin · 99.359% purity · Kovera Labs (outside lab) · LC-MS, RP-HPLC · Purity, Net Content, Identity Confirmation, Endotoxin Safety Screen
- View COA
Read in full. Tied to lot GHK50626. Tested about 4 months ago.
GHK-Cu · 99.678% purity · Kovera Labs (outside lab) · RP-HPLC, LC-MS · Purity, Net Content, Identity Confirmation, Endotoxin Safety Screen
- View COA
Read in full. Tied to lot WOLV20926. Tested about 1 months ago.
Wolverine 10mg/10mg · 99.76% purity · Freedom Diagnostics (outside lab) · LC-MS, HPLC-UV, ICP-MS · purity, identity, net_content, endotoxin
- Certificate of Analysis
Read in full (published as a scan). Tied to lot BPC157-052024. Tested about 28 months ago.
BPC-157 · 99.6% purity · Nova Labs (outside lab) · Mass Spec, HPLC · Identity, Purity, Peptide Content, Appearance
The report is about 28 months old.
Third-party ratings and public threads, read directly at the moment of this check. They are easy to buy and easy to brigade, so they are weighted low and can never overturn a lab-evidence flag. Every source below is also logged in the evidence trail.
Trustpilot did not answer, so we treat their reputation there as not visible.
Read 2026-09-17 17:38 UTC
Google shows 4.0/5.
Read 2026-09-17 17:38 UTC
No public community discussion we could read. Silence is not a verdict either way.
Read 2026-09-17 17:38 UTC
Every claim in this report traces to one of the items above. Expand a row to see the material it is based on.
The score is a weighted mean over the pillars we could actually read — 100% of the model on this run. Anything we could not see is left out of the maths rather than counted against the seller.
Model weight 34% · pillar score 10.0/10 · 6 ok, 0 flagged, 0 unseen
Model weight 24% · pillar score 10.0/10 · 6 ok, 0 flagged, 1 unseen
Model weight 18% · pillar score 10.0/10 · 1 ok, 0 flagged, 2 unseen
Model weight 12% · pillar score 5.0/10 · 1 ok, 1 flagged, 1 unseen
Model weight 12% · pillar score 10.0/10 · 1 ok, 0 flagged, 2 unseen
Reputation is deliberately the lightest pillar. Even a perfect rating cannot lift a report over a lab-evidence flag.
Paste the citation straight into a paper or a reference manager. Both files carry the run identifier and the timestamp of this report.
MyDosage. MyDosage supply check: synthesispeptides.io (9.4/10). 2026-09-17. https://mydosage.com/c/927507e0-4193-48f6-9738-95ca9a961017
The pack is one PDF: the verdict page plus an appendix of every cited page, document and social-proof source with the text we read. The data exports carry the same thing in machine form — inputs, every source with its timestamp and confidence weight, and the full scoring breakdown.
Whatever this report said, there are three ways to get what you need.
- 1Doctor + approved medicineA prescription and a pharmacy-dispensed product with a regulator's label.
- 2Clinic + licensed compounding pharmacyA prescriber and a pharmacy we checked against its licence register.
- 3Research-use-only supplierNo medical oversight. Only worth it when nothing approved exists yet.
Prices, oversight and typical wait are compared side by side for United States.