Guides
Practical explainers for evaluating peptide quality documentation, supplier transparency, and analytical testing claims.
An educational explainer of bacteriostatic water for injection — its composition, shelf life, storage requirements, regulatory status, and role in peptide reconstitution. No dosing instructions.
A buyer's evaluation guide for peptide pen cases — compact, pocketable cases for individual peptide vials or pre-drawn syringes. Covers hard-shell cases, soft pouches, and insulated pen wallets, with criteria for size, protective foam, temperature stability, discreet design, and pricing.
A buyer's evaluation guide for peptide travel cases — what to look for in insulation, size, durability, temperature control, vial protection, and discreet design, plus what to avoid and the regulatory considerations of traveling with peptide vials.
A chronological timeline of major FDA regulatory actions related to peptide compounding, warning letters, bulk substance reviews, and enforcement against online peptide sellers — from the 2013 Drug Quality and Security Act through the July 2026 PCAC meeting.
A regulatory reference page documenting FDA warning letters sent to online peptide sellers, explaining what warning letters are, how to search the FDA database, common violations that trigger enforcement, and what happens after a letter is issued.
A framework for evaluating research-use-only peptide supplier documentation quality — COA policies, third-party testing, batch tracking, shipping transparency, FDA warning letter history, and the red flags that separate legitimate research reagent vendors from sellers misusing the RUO label.
A practical guide to understanding Certificates of Analysis for research-grade peptides — what HPLC and mass spectrometry results mean, what purity percentages to expect, and how to spot red flags on supplier documentation.
An educational guide to the chemistry and math of dissolving lyophilized peptide powder into solution — covering solvents, concentration calculations, common errors, and how reconstitution calculators work. No dosing instructions.
A B2B guide explaining why peptide and supplement businesses get classified as high-risk by payment processors, why mainstream processors shut them down, and what high-risk merchant account options exist — including underwriting requirements, chargeback management, and rolling reserves.
A B2B compliance reference for peptide business owners covering FDA RUO/IUO labeling requirements, permissible and impermissible marketing claims, Certificate of Analysis standards, warning letter avoidance, cGMP considerations for compounding versus research-use-only distribution, state-level research chemical regulations, insurance and liability, and record-keeping best practices.
A comprehensive guide to the nine peptide and small-molecule categories used across this site — from GLP-1 receptor agonists and growth hormone secretagogues to recovery, cognitive, immune, cosmetic, longevity, and small-molecule compounds — covering what each category means, how the compounds work, which compounds belong where, and their regulatory status.
A pharmacokinetic reference table of approximate half-lives for 32 peptides and peptide-related compounds, organized by category — GLP-1 agonists, GHRH/GHRP, recovery, cognitive, cosmetic, immune, and longevity. Values are drawn from published literature, FDA labels, and peer-reviewed pharmacokinetic studies; actual values may vary by formulation, route, and individual.
A practical guide to storing research-grade peptides — lyophilized and reconstituted storage conditions, why light and heat degrade peptides, shelf life expectations, signs of degradation, and lab best practices for handling and temperature logging.
An informational overview of the physical supplies that peptide researchers use — cases, syringes, alcohol prep pads, mixing supplies, storage containers, labels — what each is used for, how to evaluate quality, and why it matters for research integrity.
A comprehensive glossary of peptide-related terms — from foundational biochemistry (amino acid, peptide bond, sequence) to analytical methods (HPLC, mass spectrometry), regulatory categories (RUO, COA, cGMP, 503A/503B), and formulation concepts (lyophilized, reconstitution, bacteriostatic water).
A directory-style guide to the state-level regulatory landscape for peptides — covering how federal and state authority divides over research chemicals, compounding pharmacy oversight, syringe and needle possession laws, and telehealth prescribing restrictions, with guidance on how to research your own state's rules.
An educational comparison of sterile water for injection and bacteriostatic water for injection — their regulatory classification, preservative content, in-use windows, and why the distinction matters for peptide reconstitution. No dosing instructions.