Current Canada comparison
| Resource | Canada | COA status | Testing | PRN status |
|---|---|---|---|---|
| Purity Peptides | Ships to Canada | Batch COAs published | HPLC + mass spectrometry | Current PRN-reviewed partner |
| Canadian supplier shortlist | Canada-first review needed | Must be verified | Must be verified | Under review |
| Independent testing services | Canada availability varies | Used to verify supplier claims | HPLC / LC-MS context | Research resource to build |
Purity Peptides
PRN currently lists Purity because it fits the first supplier criteria layer: research-use labeling, published COAs, third-party testing claims and Canada/U.S. shipping.
What a Canada-focused supplier page should answer
Batch identity
Does the COA match the exact lot being sold, not just a generic product page?
Testing method
Does the supplier show HPLC purity and identity testing such as mass spectrometry?
Shipping reality
Does the company clearly state where it ships and what the buyer is responsible for?
Research-use compliance
Does the marketing avoid dosing, treatment claims and human-use positioning?
Partner disclosure: PRN may earn a commission if readers use our Purity Peptides link or code PRN. Commercial relationships do not determine the testing criteria or research-use framing.