Verdict: Purgo Labs, on the evidence: 10/10 rubric points against 8/10.
Purgo Labs: 10/10 · Trustpilot 4.7 (80 reviews) · SteriGenix · Freedom Diagnostics | Rivn Peptides: 8/10 · 4.9 (326 reviews) · Freedom Diagnostics
Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Rivn Peptides. Scores are produced by the published rubric, which has no partnership input.
The 10 criteria, side by side
| Criterion | Purgo Labs | Rivn Peptides |
|---|
| Names its testing laboratory | ✔ SteriGenix and Freedom Diagnostics named per lot | ✔ Freedom Diagnostics (Nashville) named on /testing, per-batch |
| Certificates verifiable at the lab, not just the vendor | ✔ Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com | ✔ Freedom Diagnostics certificate prints Search Code RIVN2606290308 for lookup at freedomdiagnosticstesting.com (read 6 Sep 2026) |
| Batch-specific COAs matched to lots | ✔ Lot numbers (e.g. PL-BPC-05) with test dates per batch | ✔ Certificate carries lot IGF-217 (IGF-1LR3 1mg) |
| 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) | ✔ Certificate reports 1.19mg measured vs 1mg label, 99.76% purity |
| COAs and pricing viewable without an account | ✔ COAs on product pages without login | ✔ Public certificate gallery now linked from the homepage /testing (7 images, read 6 Sep 2026; none yet for BPC-157 or TB-500) |
| 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) | ✔ 4.9 / 326 on Trustpilot |
| 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 43-product catalog |
| Publishes a legal entity and street address | ✔ PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026) | ✔ Rivn Research LLC · 710 Nashville Pike Ste 104, Gallatin, TN — on-site (6 Sep 2026) |
| 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 | 8/10 |
Like-for-like prices
| Compound | Purgo Labs | Rivn Peptides | Lower |
|---|
| BPC-157 10mg | $44.99 (2026-08-03) | $49.99 (2026-08-27) | Purgo Labs |
| Retatrutide 10mg | $59.99 (2026-08-03) | $99.99 (2026-08-27) | Purgo Labs |
| Retatrutide 20mg | $119.99 (2026-08-14) | $149.99 (2026-08-27) | Purgo Labs |
| Retatrutide 30mg | $159.99 (2026-08-14) | $194.99 (2026-08-27) | Purgo Labs |
| TB-500 10mg | $49.99 (2026-08-14) | $49.99 (2026-08-27) | Equal |
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.
Rivn Peptides: No public per-batch COA library on the site — certificates are stated to ship with orders, so they cannot be checked before purchase. An on-site '4.9 (1,247 reviews)' widget does not match any independently viewable record (Trustpilot shows 326).
Frequently asked
Is Purgo Labs better than Rivn Peptides?
Purgo Labs, on the evidence: 10/10 rubric points against 8/10. Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.
Is Rivn Peptides legit?
Rivn Peptides scores 8/10 on our rubric, has an independently viewable rating of 4.9 (326 reviews), and names its lab (Freedom Diagnostics). Caveat: No public per-batch COA library on the site — certificates are stated to ship with orders, so they cannot be checked before purchase. An on-site '4.9 (1,247 reviews)' widget does not match any independently viewable record (Trustpilot shows 326).
Do you earn money from either vendor?
Purgo Labs is our affiliate partner and we earn a commission on referred orders; we earn nothing from Rivn Peptides. Scores come from the rubric, which has no partnership input.
Related