How are affiliate and sister-brand relationships handled in scoring?

Live Alpha Labs (featured affiliate, code SOL), BluGen, and Halo are all affiliate partners scored on identical 1–10 criteria. Relationships are disclosed on every comparison page. Scores reflect documentation and catalog signals — not commission rates.

How often are vendor scores updated?

When retailer documentation practices, catalog structure, or market conditions materially change. Compound offer tables show editorial price snapshots with a last-verified note on high-traffic pages.

Can vendors request a correction?

Yes. Use the correction process at /corrections. We document what changed and why in the public correction log.

Vendor Comparison Methodology — How PurePep Vital Scores Research Peptide Suppliers

PurePep Vital is an editorial publisher, vendor comparison resource, and affiliate deal tracker — not a peptide vendor, laboratory, or pharmacy. This page documents exactly how we score third-party retailers so researchers can audit our comparisons.

Affiliate disclosure

This page contains affiliate links and may reference sister brands. PurePep Vital may earn a commission if you purchase through certain links. We do not sell, ship, test, or guarantee products. Verify documentation directly with the retailer before procurement.

See our full disclosure

What we evaluate

COA documentation quality — batch-specific third-party HPLC, mass spectrometry identity, lot numbers, downloadable PDFs
Catalog breadth — coverage across metabolic, recovery, cognitive, skin, and hormone research categories
Pricing value — list price per mg on shared SKUs in our offer tables
Checkout accessibility — credit-card acceptance, domestic shipping signals, return policy visibility

What we do not evaluate

Independent laboratory testing of vial contents
Real-time stock or fulfillment guarantees
Institutional compliance with a specific buyer's SOP
Clinical efficacy or human-use outcomes

Scoring scale (1–10)

Each vendor receives four editorial scores. Scores are estimates based on public product pages and documentation claims — not laboratory verification.

Vendor	COA	Catalog	Value	Checkout
Live Alpha Labs	9/10	9/10	9/10	9/10
BluGen	8/10	8/10	9/10	8/10
Halo	9/10	9/10	7/10	8/10

What “COA-verified” means here

We use “COA-verified” to mean the retailer advertises batch-specific certificate-of-analysis documentation on product pages — not that PurePep Vital has tested the batch. Always request the PDF, match lot numbers to the vial, and verify HPLC and identity methods with institutional QA before procurement.

Affiliate & sister-brand disclosure

All three scored vendors are affiliate partners. Live Alpha Labs is the featured partner (exclusive code SOL for 10% off). BluGen and Halo are sister brands with overlapping SKUs on compound offer tables. We may earn from qualifying purchases. See /disclosure.

Correction process

Vendor documentation, pricing, and catalog claims change. Corrections are logged at /corrections. Vendors may request updates by email via the contact route on our About page.

Methodology FAQ

No. We evaluate publicly described documentation practices, catalog listings, and checkout signals. We do not manufacture, compound, sell, ship, test, prescribe, or handle peptide products.