Knowledge base

Frequently asked questions

Straightforward answers about catalogue language, documentation and Canadian product information. Nothing here is medical advice.

32 answers

Catalogue and ordering

Quantity and storage

Documents and test language

Research use and product information

Verifying documents

Reading claims and research

Canadian regulatory context

About this site

Sources and longer explanations are available in the Proof Line journal, arranged into reading paths on the learning hub. A printable document checklist is available for recording what a supplier actually provided. Terms are defined in the glossary, and our editorial policy explains how these answers are written.

Frequently asked questions

Catalogue and ordering

What is in the Proof Line Peptides catalogue?

Are prices shown in Canadian dollars?

What does the Canadian focus mean?

What is the difference between a blend and a single compound?

Quantity and storage

Does a vial’s mg quantity tell me its concentration?

What does lyophilized mean?

How should research peptides be stored?

Why can storage instructions differ by product?

Documents and test language

What is a certificate of analysis (COA)?

How do I match a report to a vial?

What is the difference between identity and purity?

Does a purity result prove sterility?

Research use and product information

Is a research-use product a medicine?

How can I check Canadian drug authorization information?

Where can I find product specifications?

Are the product images exact photographs of shipped packaging?

Verifying documents

How do I check that a certificate of analysis is genuine?

What is chain of custody, and why does it matter here?

Does a high purity percentage mean a material is safe?

What is the difference between purity, peptide content and biological activity?

What should a research batch record contain?

What if the lot number on the vial does not match the report?

Reading claims and research

How do I check a peptide claim I saw on social media?

Is there such a thing as a GLP-3 receptor?

Why does the type of study matter so much?

Does research on each component tell me about a blend?

Canadian regulatory context

What has Health Canada said about peptides bought online?

Does a “research use only” label change the regulatory position?

Can I tell from an ingredient name whether something is authorized in Canada?

About this site

Who writes the content on this site?

Are the scientific claims on this site reviewed by a doctor?

Does research about a compound say anything about your product quality?