Core Peptides

Overview

Core Peptides is a newer US-based vendor that launched with a catalog of 78+ peptides and blends. The company has generated positive early customer feedback, particularly from functional medicine practitioners, and provides HPLC and mass spectrometry data for many products. However, significant gaps remain: no Finnrick independent testing, incomplete COA coverage across the full product line, and limited operational history.

What We Found

Testing & Quality (Score: 50/100)

Core Peptides provides COAs with HPLC and mass spectrometry results for many products, with claimed purity of >99%. However:

• Not tested by Finnrick Analytics — no independent third-party verification through the industry’s most comprehensive testing platform
• COA archive is described as “constantly being updated” — meaning not all products had COAs at launch
• The company’s own testing data (HPLC chromatograms, mass spec) for featured products like CJC-1295/Ipamorelin blends appears professional, but vendor-supplied COAs carry inherent conflict of interest
• No endotoxin or sterility testing data identified

The “COAs coming soon” approach is common among new vendors but represents a real gap — launching 78+ products without complete testing documentation means early buyers are taking on additional risk.

Transparency (Score: 50/100)

Product pages include educational content with research citations, which is above average. Comparative peptide group reviews help customers understand compounds. However, the incomplete COA coverage and lack of independent testing are transparency deficits. Ownership and manufacturing details are not prominently disclosed.

Pricing (Score: 60/100)

Competitive pricing. BPC-157 5mg at approximately $47. Free shipping for $200+ orders, flat rate $9.95, overnight available at $49.95. Standard for the mid-market tier.

Reputation (Score: 55/100)

Limited but positive early feedback:

• A functional medicine doctor provided a detailed endorsement citing “perceptibly superior” product quality compared to other companies
• Early customer reviews highlight punctuality, product quality, and customer service
• The endorsement from a named medical professional is more credible than anonymous reviews
• However, total review volume is low and the operational track record is short

Compliance (Score: 50/100)

Standard research-use disclaimers. Accepts credit cards, Venmo, Zelle, and CashApp — the mix of traditional and alternative payment methods is common. No known FDA enforcement actions. The broad catalog (78+ products including blends) at launch is ambitious for a new operation.

The PeptideExaminer Verdict

Core Peptides shows promising signs: professional presentation, educational content, some COA documentation, and endorsements from healthcare professionals. But “promising” is not “proven.” The lack of Finnrick or comparable independent testing, incomplete COA coverage, and short operating history are real limitations. The company is essentially asking buyers to trust vendor-supplied quality data in a market where independent verification is increasingly available from competitors. We’ll revisit this grade as the company matures and if independent testing data becomes available.

Grade: C

Category	Score	Weight	Weighted
Transparency	50	20%	10.0
Testing	50	25%	12.5
Pricing	60	15%	9.0
Reputation	55	20%	11.0
Compliance	50	20%	10.0
Total			52.5 → C

Sources: corepeptides.com, Muscle and Brawn review, Finnrick Analytics (not listed)