About Peptide Format Guide

Peptide Format Guide is a research reference site covering peptide format options for laboratory and academic research. The guide focuses on how the same compound — Semaglutide, BPC-157, Epithalon, NAD+ — can be sourced in five distinct formats (vial, pen, capsule, blend, kit), and what each format means for research workflow design.

Who maintains the guide

The guide is maintained by Dr. Marcus Whitfield, PhD (peptide biochemistry) with contributions from Devon Reyes. Dr. Whitfield's research focus spans receptor agonist analogues, regenerative peptide applications, and batch-documentation standards in research-grade peptide supply. Devon Reyes contributes vendor-data verification and CoA cross-checks.

Why this site exists

The site started in late 2024 as a way to consolidate vendor information across multiple peptide categories — GLP-1 receptor agonists, recovery peptides, cognition and longevity peptides — into a single research reference. Researchers running multi-category protocols had to navigate fragmented vendor catalogs, inconsistent CoA practices, and incomplete format documentation. Peptide Format Guide gathers that information into a structured, format-aware reference.

Our editorial stance

We do not accept sponsored placements. All vendor evaluations are based on publicly available documentation: vendor websites, public CoA libraries, third-party testing archives, Trustpilot signals, and peer-reviewed literature for peptide mechanism-of-action references. Where a vendor's documentation is unclear or unavailable, we say so explicitly in the relevant guide.

Contact

Editorial inquiries, factual corrections, and vendor-documentation submissions: contact form or reference@formatguide.online (placeholder).

Compliance note

All peptides referenced on this site are for laboratory research only and are not approved for human consumption or therapeutic use in any jurisdiction. See our methodology and terms of use for full disclaimers.