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Plain-English guides on purity, certificates, storage and sourcing — written to inform researchers and built to rank in search & AI answers.
Buying in Canada
What are peptides in skincare? The four types, how to decode peptide names on an ingredient list, what Canada's 1% rule means, what studies measured, and peptides vs retinol.
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Education
What is a secretagogue? The meaning and origin of the word, the main classes from growth hormone and insulin to gastric acid, how secretion is measured in the lab, and what the label leaves out.
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Education
Bradford vs BCA assay: how each protein assay works, why the standard skews results, and why both can mislead you with short synthetic peptides.
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Education
Peptide purity explained: what an HPLC area-per-cent figure measures, why it is not net peptide content or identity, and what a high number can hide.
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Buying in Canada
FDA published substance reviews for seven research peptides in July 2026. What they found on human data for BPC-157, KPV, MOTS-c and more.
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Buying in Canada
A goods-in checklist for research peptides: batch matching, the recognised freeze-dried cake defects, and what appearance cannot tell you.
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Education
A single purity figure underdetermines a co-formulated peptide vial. What area percent measures, why it is not the component ratio.
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Cognitive & Neuro Research
N-acetyl peptides explained: the fixed 42 Da mass shift, why an acetate salt is not N-acetylation, and what is actually published.
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Anti-Aging & Cellular Research
GHK-Cu and AHK-Cu differ by one methyl group. One has a human randomised trial behind it; the other has a single ex-vivo study.
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Education
The FDA registers TB-500 as a seven-residue fragment, not full-length thymosin beta-4. Why only a measured mass tells the two vials apart.
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