Verdict: A tie on evidence — both earn 10/10. What separates them is review base (4.6 (59 reviews) vs 4.7 (80 reviews)) and price (4 rows cheaper at Peptide Giants, 1 at Purgo).
Purgo Labs: 10/10 · Trustpilot 4.7 (80 reviews) · SteriGenix · Freedom Diagnostics | Peptide Giants: 10/10 · 4.6 (59 reviews) · Janoshik Analytical · Vanguard Laboratory
Disclosure: Purgo Labs is our affiliate partner, and so is Peptide Giants. Scores are produced by the published rubric, which has no partnership input.
The 10 criteria, side by side
| Criterion | Purgo Labs | Peptide Giants |
|---|
| Names its testing laboratory | ✔ SteriGenix and Freedom Diagnostics named per lot | ✔ Janoshik Analytical named on product pages; Vanguard Laboratory listed for 18 certificates on /lab-reports/ |
| Certificates verifiable at the lab, not just the vendor | ✔ Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com | ✔ Certificates resolve on verify.janoshik.com (e.g. report #100942, BPC-157 10mg) |
| Batch-specific COAs matched to lots | ✔ Lot numbers (e.g. PL-BPC-05) with test dates per batch | ✔ Dated batch codes per product (e.g. PG-2451, 22 Jan 2026) |
| 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) | ✔ Vanguard Laboratory PDF for lot PG-5101 (TB-500 5mg) reports 4.92mg measured vs 5mg, 99.30% purity — read 6 Sep 2026 |
| COAs and pricing viewable without an account | ✔ COAs on product pages without login | ✔ Lab reports and sized pricing viewable 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) | ✔ 4.6 / 59 on Trustpilot (verified 5 Sep 2026) |
| No contradictions among its own claims | ✔ No contradictions found across site claims (checked Aug 2026) | ✔ No contradictions found; prices stable across two reads (checked 5 Sep 2026) |
| 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 (BPC-157 10mg $36.00, TB-500 10mg $48.00) |
| Publishes a legal entity and street address | ✔ PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026) | ✔ Plainview Commerce LLC · Tampa, FL street address, EIN and sales-tax number on the refund policy |
| 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) | ✔ No on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026) |
| Total | 10/10 | 10/10 |
Like-for-like prices
| Compound | Purgo Labs | Peptide Giants | Lower |
|---|
| BPC-157 10mg | $44.99 (2026-08-03) | $36.00 (2026-09-05) | Peptide Giants |
| NAD+ 500mg | $59.99 (2026-08-03) | $19.99 (2026-09-05) | Peptide Giants |
| Retatrutide 10mg | $59.99 (2026-08-03) | $65.99 (2026-09-05) | Purgo Labs |
| TB-500 10mg | $49.99 (2026-08-14) | $48.00 (2026-09-05) | Peptide Giants |
| Tirzepatide 10mg | $49.99 (2026-08-03) | $43.99 (2026-09-05) | Peptide Giants |
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.
Peptide Giants: Smallest review base in this batch (59). Measured net content could not be read from the certificate images. The legal entity name appears on the refund policy but not the About page. GLP products sold under house codes PG-1SG / PG-2TZ / PG-3RT.
Frequently asked
Is Purgo Labs better than Peptide Giants?
A tie on evidence — both earn 10/10. What separates them is review base (4.6 (59 reviews) vs 4.7 (80 reviews)) and price (4 rows cheaper at Peptide Giants, 1 at Purgo). Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.
Is Peptide Giants legit?
Peptide Giants scores 10/10 on our rubric, has an independently viewable rating of 4.6 (59 reviews), and names its lab (Janoshik Analytical · Vanguard Laboratory). Caveat: Smallest review base in this batch (59). Measured net content could not be read from the certificate images. The legal entity name appears on the refund policy but not the About page. GLP products sold under house codes PG-1SG / PG-2TZ / PG-3RT.
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 Peptide Giants. Scores come from the rubric, which has no partnership input.
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