Purgo Labs Reviews & Comparisons (2026): Scored Against Every Vendor

The matchups readers open first

2 ties · 18 partners · 75 vendors

Ties on the rubric first, then partner vendors, then the highest scores. Every number is from the data layer; open a card for the criterion-by-criterion split and the like-for-like prices.

Purgo Labs
10/10
VS
MyPurePeptide
10/10
Tie on evidencePartner
Trustpilot
4.7 (177 reviews)
Named lab
Janoshik Analytical
Like-for-like vials
Purgo cheaper on 0, MyPurePeptide on 7 (after codes)
Head-to-head
Purgo Labs
10/10
VS
Peptide Giants
10/10
Tie on evidencePartner
Trustpilot
4.6 (65 reviews)
Named lab
Janoshik Analytical
Like-for-like vials
Purgo cheaper on 6, Peptide Giants on 6 (after codes)
Head-to-head
Purgo Labs
10/10
VS
Rivn Peptides
9/10
Purgo Labs aheadPartner
Trustpilot
4.9 (603 reviews)
Named lab
Freedom Diagnostics
Like-for-like vials
Purgo cheaper on 8, Rivn Peptides on 0 (after codes)
Head-to-head
Purgo Labs
10/10
VS
Ameano Peptides
9/10
Purgo Labs aheadPartner
Trustpilot
4.8 (461 reviews)
Named lab
Janoshik Analytical
Like-for-like vials
Purgo cheaper on 5, Ameano Peptides on 2 (after codes)
Head-to-head
Purgo Labs
10/10
VS
Amino Club
9/10
Purgo Labs aheadPartner
Trustpilot
4.6 (573 reviews)
Named lab
ILS Labs
Like-for-like vials
Purgo cheaper on 6, Amino Club on 4 (after codes)
Head-to-head
Purgo Labs
10/10
VS
TrustedPeps
9/10
Purgo Labs aheadPartner
Trustpilot
4.8 (104 reviews)
Named lab
Freedom Diagnostics
Like-for-like vials
Purgo cheaper on 0, TrustedPeps on 7 (after codes)
Head-to-head

Every head-to-head, one rubric

Rank = scoreboard band · full scoreboard

Sort

Rank is the scoreboard band (T-1 = tied for first). "Ahead" means more rubric points; it is not a verdict on price — each page shows the like-for-like prices separately. Ratings are Trustpilot, read on the date shown on each page.

What every head-to-head checks

10 criteria · one point each · methodology

01Names its testing laboratoryThe lab is identified by name on the vendor's site; you can look it up and contact it.
02Certificates verifiable at the lab, not just the vendorCOAs are hosted on the testing lab's own system or carry a lab-side lookup code.
03Batch-specific COAs matched to lotsCertificates carry lot numbers that match shipped vials, not one generic PDF.
04Publishes measured net content vs labelCOAs state measured milligrams against the labelled amount, not purity % alone.
05COAs and pricing viewable without an accountOpen the COA library and catalog logged out.
06Independent review base (50+ on an external platform)Check the vendor on Trustpilot or an equivalent platform the vendor cannot edit.
07No contradictions among its own claimsCompare testing/lab statements across the vendor's own pages.
08Vial sizes stated with pricesCatalog or product pages show milligrams next to every price.
09Publishes a legal entity and street addressThe company's registered name (LLC, Inc., s.r.o. …) and a street address appear on the vendor's own Contact, About or Terms pages — not only a brand name, a city, or hidden page markup.
10No misleading trust signals or buyer-protection workaroundsCompare any on-site review score or badge with the independent platform; check whether the vendor only takes, or pushes you toward, payment rails you cannot dispute; check FDA and BBB records. Awarded unless one of these is on record.

Awarded only on what we could read ourselves. How we vet vendors · How to read a COA · Price index

Where the evidence points

2 vendors tie Purgo Labs on the rubric. None beats it.

Publishes per-lot COAs naming the testing laboratory — SteriGenix and Freedom Diagnostics — with lot numbers, test dates, measured net peptide content and direct verify-at-lab links. HPLC and mass spectrometry testing, US-based fulfilment from Scottsdale, Arizona, same-day dispatch on weekday orders before 2PM EST, and a 60-day money-back guarantee. Verified-lowest after codes on 5 of 56 like-for-like vials. Code HEALTH takes 20% off every order every order.

20% off every order with codeaffiliate code, disclosed · not a ranking input

Visit Purgo Labs

Purgo Labs is our primary affiliate partner; we earn a commission on that link. The score is computed from published evidence and does not read partner status. The caveat: 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.

Closed vendors — 4 archived comparisons

Kept for researchers migrating from them. What happened, and the successor-scam warnings, are on the vendor closures tracker.

Purgo Labs vs Chameleon Peptides — ceased operations 27 September 2026; was scored on the rubric
Purgo Labs vs Peptide Sciences — closed
Purgo Labs vs Amino Asylum (Shut Down) — closed
Purgo Labs vs Science.bio — closed

Questions

What should I look for when choosing a research peptide supplier?

The most important factors are COA (Certificate of Analysis) transparency, purity standards, and independent third-party testing. A reputable supplier will publish HPLC and mass spectrometry test results for each batch, showing purity above 98% and confirming the correct molecular weight. Pricing, catalog depth, and shipping speed are secondary considerations once quality is established.

What is a Certificate of Analysis (COA) and why does it matter?

A Certificate of Analysis is a document from an independent laboratory confirming the identity, purity, and potency of a compound. For research peptides, a COA should include HPLC purity data (typically expressed as a percentage), mass spectrometry confirmation of the correct molecular weight, and endotoxin testing results. Suppliers that do not publish COAs or only provide internal testing should be treated with caution.

Is Purgo Labs a legitimate research peptide supplier?

Purgo Labs is a US-based research peptide supplier that publishes third-party COAs for its products and maintains a publicly accessible product catalog with transparent pricing. The company sells compounds for research purposes only and includes appropriate disclaimers. As with any research compound supplier, buyers should review COA documentation for each specific product and batch before use.

How do I verify that a peptide supplier's COAs are legitimate?

Legitimate COAs will name the independent testing laboratory, include a batch or lot number that matches the product, show HPLC chromatogram data (not just a summary number), and be dated within the last 12–18 months. You can cross-reference the testing lab's name against known accredited laboratories. Be cautious of COAs that show round numbers (e.g., exactly 99.00%) without supporting chromatogram data, or that come from in-house labs rather than independent third parties.

Why does catalog depth matter for a peptide supplier?

Researchers who work with multiple compounds benefit from sourcing from a single supplier with consistent quality standards across their catalog. A supplier with deep catalog coverage — including GLP-1 class peptides (Semaglutide, Tirzepatide, Retatrutide), recovery peptides (BPC-157, TB-500), and longevity compounds (Epithalon, MOTS-c) — reduces the operational complexity of managing multiple vendor relationships and ensures consistent batch-to-batch quality standards.

Purgo Labs vs every vendor we score