Notes on peptide quality, wholesale sourcing, clinic operations, and practice support, written by the PSG team.
7 articles · updated weekly
October 7, 2026 · 3 min read
A look at the quality standards behind the PSG catalog: cGMP manufacturing, independent ISO/IEC 17025 laboratory testing, and certificates of analysis for approved accounts.
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September 30, 2026 · 5 min read
The certificate of analysis is the most useful document in wholesale peptide sourcing — and one of the most commonly misread. Here is what to look for, what to ignore, and what to ask for.
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September 23, 2026 · 4 min read
Both acronyms show up in every wholesale sourcing conversation, and they are often used interchangeably. They are not the same thing, and a supplier needs both.
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September 9, 2026 · 5 min read
Sourcing is one decision out of several. Storage, lot tracking, receiving checks, and record-keeping are where clinics actually get into trouble.
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September 2, 2026 · 4 min read
PSG applications take longer than a typical website signup because every application is checked against public provider records. Here is exactly what gets verified and why.
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August 26, 2026 · 4 min read
Peptide Source Group is a wholesale distributor and marketing support company. The first half is obvious; the second half is where the questions start.
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August 19, 2026 · 3 min read
Reconstituted and liquid formulations come with handling requirements that a shipping box cannot always survive. Here is why PSG currently lists dry products only.
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