Verdict: Purgo Labs, on the evidence: 10/10 rubric points against 7/10.
Purgo Labs: 10/10 · Trustpilot 4.7 (80 reviews) · SteriGenix · Freedom Diagnostics | PS Peptides: 7/10 · 4.1 (174 reviews) · North American Diagnostics
Disclosure: Purgo Labs is our affiliate partner, and so is PS Peptides. Scores are produced by the published rubric, which has no partnership input.
The 10 criteria, side by side
| Criterion | Purgo Labs | PS Peptides |
|---|
| Names its testing laboratory | ✔ SteriGenix and Freedom Diagnostics named per lot | ✔ North American Diagnostics named; lab operates nadiagnostics.com with a batch-lookup portal |
| Certificates verifiable at the lab, not just the vendor | ✔ Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com | ✔ Certificates carry lab test IDs (e.g. PSP-0028020) checkable via the lab's lookup portal (portal requires JavaScript; PDFs vendor-hosted) |
| Batch-specific COAs matched to lots | ✔ Lot numbers (e.g. PL-BPC-05) with test dates per batch | ✔ Test ID / batch ID on each certificate; buyers told to match vial lot to certificate |
| Publishes measured net content vs label | ✔ Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label) | ✔ Measured mass vs label published (5.03mg measured vs 5mg label on BPC-157 example) |
| COAs and pricing viewable without an account | ✔ COAs on product pages without login | ✔ Downloadable PDFs on every product page and public pricing without an account |
| Independent review base (50+ on an external platform) | ✔ 4.7 / 80 on Trustpilot (re-read 6 Sep 2026; 4.7 / 75 on 14 Aug 2026) | ✔ 4.1 / 174 on Trustpilot (verified 5 Sep 2026) |
| No contradictions among its own claims | ✔ No contradictions found across site claims (checked Aug 2026) | ✘ Not awarded |
| Vial sizes stated with prices | ✔ Product pages state vial size with price (e.g. BPC-157 10mg at $44.99; 24 dated size+price readings on record) | ✔ Sizes stated with prices across the full GLP range |
| Publishes a legal entity and street address | ✔ PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026) | ✘ Not awarded |
| No misleading trust signals or buyer-protection workarounds | ✔ No on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026) | ✘ Not awarded |
| Total | 10/10 | 7/10 |
Like-for-like prices
| Compound | Purgo Labs | PS Peptides | Lower |
|---|
| BPC-157 10mg | $44.99 (2026-08-03) | $89.99 (2026-09-05) | Purgo Labs |
| Semaglutide 10mg | $49.99 (2026-08-03) | $64.99 (2026-09-05) | Purgo Labs |
| TB-500 10mg | $49.99 (2026-08-14) | $79.99 (2026-09-05) | Purgo Labs |
| Tirzepatide 10mg | $49.99 (2026-08-03) | $54.99 (2026-09-05) | Purgo Labs |
Caveats
Purgo Labs: Smaller independent review base than several competitors (80 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.
PS Peptides: Lowest Trustpilot average of the batch (4.1), and the vendor's own blog claims a '5-star Trustpilot rating from thousands of customers' that the live record does not support. No street address — 'New Jersey-based' only. Certificate PDFs are vendor-hosted; the lab's lookup portal needs JavaScript.
Frequently asked
Is Purgo Labs better than PS Peptides?
Purgo Labs, on the evidence: 10/10 rubric points against 7/10. Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.
Is PS Peptides legit?
PS Peptides scores 7/10 on our rubric, has an independently viewable rating of 4.1 (174 reviews), and names its lab (North American Diagnostics). Caveat: Lowest Trustpilot average of the batch (4.1), and the vendor's own blog claims a '5-star Trustpilot rating from thousands of customers' that the live record does not support. No street address — 'New Jersey-based' only. Certificate PDFs are vendor-hosted; the lab's lookup portal needs JavaScript.
Do you earn money from either vendor?
Purgo Labs is our affiliate partner and we earn a commission on referred orders, as we do from PS Peptides. Scores come from the rubric, which has no partnership input.
Related