An independent, category-by-category comparison of Purgo Labs and Core Peptides — covering purity standards, COA transparency, pricing, GLP-1 availability, product selection, and which supplier is better for specific research use cases.
Our Verdict (2026)
Core Peptides is a strong, legitimate supplier with 78+ compounds, competitive pricing ($47 for BPC-157 5mg), HPLC+Mass Spectrometry testing, and a user-friendly website. It is a solid choice for researchers who want a large catalog and competitive base pricing.
Purgo Labs edges ahead on COA completeness (every product, every batch), cGMP documentation, GLP-1/metabolic compound selection, and immediate pricing advantage via the 15% discount code (HEALTH). For researchers working with newer compound classes or who require full COA coverage, Purgo Labs is the stronger choice.
| Category | Purgo Labs | Core Peptides |
|---|---|---|
| Current Status | Active — accepting orders | Active — accepting orders |
| Purity Standard | ≥99% (stated + COA verified) | ≥99% (HPLC + Mass Spec) |
| Third-Party COA | Every batch, publicly accessible | HPLC+MS — not all products yet |
| Pricing (BPC-157 5mg) | Competitive + 15% code HEALTH | $47 (competitive) |
| cGMP Manufacturing | Yes — documented | Not explicitly stated |
| Product Catalog | 30 compounds incl. GLP-1/GLP-3/NAD+ | 78+ peptides and blends |
| Shipping | 1–2 business day processing, US-based | Free $200+, flat $9.95, overnight $49.95 |
| Payment Options | Standard payment methods | Credit cards, Venmo, Zelle, CashApp |
| Discount Code | Code HEALTH — 15% off | No discount code program |
| GLP-1/Metabolic Peptides | GLP-1 S, GLP-2 T, GLP-3 R, AOD-9604, KLOW | Limited GLP-1 class selection |
| Longevity Compounds | NAD+, Epithalon, MOTS-c, SS-31 | Limited longevity selection |
| Trustpilot Reviews | 4.9 (growing) | 4.0 (65 reviews, Knoji) |
Core Peptides uses HPLC and Mass Spectrometry testing — a rigorous dual-method approach that is among the best in the industry. However, COAs are not yet available for all 78+ products in their catalog. The company has stated they are actively adding COAs, but researchers who require full documentation coverage on every compound should verify availability before ordering.
Purgo Labs provides batch-specific COAs on every product page without exception. For researchers who treat COA completeness as a non-negotiable requirement — particularly those working with GLP-1 class or longevity compounds — Purgo Labs is the more reliable choice.
COA-verified research peptides with US-based fulfillment. Use code HEALTH for 15% off all products.
Shop Purgo Labs — Code HEALTH for 15% OffYes. Core Peptides (corepeptides.com) is a legitimate, active US-based research peptide supplier with a 4.7/5 rating on Muscle and Brawn and 4.0/5 on Knoji (65 reviews). They use HPLC and Mass Spectrometry testing and carry 78+ peptides and blends. Note: corepeptides.ca (Canada) is a separate, unaffiliated company with a poor reputation — always verify you are ordering from corepeptides.com.
Core Peptides uses HPLC and Mass Spectrometry testing, but COAs are not yet available for all products — the company is in the process of adding them. Purgo Labs provides batch-specific COAs on every product page, making it the stronger choice for researchers who require full documentation coverage.
Core Peptides is competitively priced — BPC-157 5mg is listed at $47, which is lower than many competitors. Purgo Labs' pricing combined with the 15% discount code (HEALTH) brings it to a comparable or lower effective price point depending on the compound. Core Peptides offers free shipping on orders over $200, while Purgo Labs' shipping terms vary.
Purgo Labs has a clear advantage for GLP-1 class compounds. They carry GLP-1 S (semaglutide), GLP-2 T (tirzepatide), GLP-3 R (retatrutide), AOD-9604, and KLOW. Core Peptides' selection in this category is more limited. Researchers specifically working with metabolic or GLP-1 class compounds should favor Purgo Labs.
Yes. corepeptides.ca (Canada) is a separate company that is not affiliated with corepeptides.com and has a poor reputation. Always verify you are ordering from corepeptides.com. The legitimate Core Peptides website is US-based.
Purgo Labs has a 4.9 Trustpilot rating (growing review base). Core Peptides has a 4.7/5 on Muscle and Brawn and 4.0/5 on Knoji (65 reviews). Both suppliers have positive reputations, with Purgo Labs showing a higher average rating across review platforms.
Medical Disclaimer: All content on this site is for educational and research purposes only. Research peptides are not FDA-approved for human use. Always consult a qualified healthcare professional before considering any peptide or supplement protocol. Nothing on this site constitutes medical advice, diagnosis, or treatment.