USA SUPPLIER
Amino Science Labs
Strong Transparency
86 / 100
Strong
PSR READER OFFER
20% OFF
AMINO20
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
PSR / CURRENT READER OFFERS
Supplier Coupons & Specials
Copy a code, review the supplier report, then visit the supplier.
Codes tracked by PSR • Research-use suppliers • Affiliate relationships disclosed
Affiliate Disclosure: PSR may earn a commission when you use certain links or codes on this page, at no additional cost to you. Affiliate relationships do not influence PSR scores, methodology, or research findings. All score summaries are preliminary and evidence-limited, and are not certifications or safety determinations.
USA SUPPLIER
Offline Peptides
Strong Transparency
87 / 100
Strong
PSR READER OFFER
10% OFF
With SMS signup
Last checkedSeptember 2026
Offer statusSupplier signup offer
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
True Peptides
Strong Transparency
87 / 100
Strong
PSR READER OFFER
10% OFF
peptidesupply
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
Evolve Peptides
Strong Transparency
88 / 100
Strong
PSR READER OFFER
15% OFF
PSR15
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
EU SUPPLIER
CertaPeptides
Excellent Transparency
95 / 100
Excellent
PSR READER OFFER
15% OFF
PSRSAVE15
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
Peptides Kingdom
Excellent Transparency
90 / 100
Excellent
PSR READER OFFER
15% OFF
PSRSAVE15
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
PSPeptides
Excellent Transparency
95 / 100
Excellent
PSR READER OFFER
PSR Reader Promo Code — PSRSAVE10
PSRSAVE10
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
Aero Peptides
Strong Transparency
83 / 100
Strong
PSR READER OFFER
10% OFF
10OFF
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
99 Purity Peptides
Strong Transparency
87 / 100
Strong
PSR READER OFFER
10% off single products. Excludes kits and bundles.
PEPTIDESUPPLYRE
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
EU SUPPLIER
Baltic Peptides
Strong Transparency
89 / 100
Strong
PSR READER OFFER
10% OFF
peptidesupplyreport10
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
Apollo Peptide Sciences
Excellent Transparency
91 / 100
Excellent
PSR READER OFFER
No PSR promo code currently available
Check back for future PSR reader offers.
Last checkedSeptember 2026
Offer statusNo code confirmed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
American Peptides
Excellent Transparency
94 / 100
Excellent
PSR READER OFFER
15% OFF
PSRPEPTIDES
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
Sparta Labs
Excellent Transparency
93 / 100
Excellent
PSR READER OFFER
15% OFF
PSRSAVE15
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
Omni Peptides
Excellent Transparency
92 / 100
Excellent
PSR READER OFFER
10% OFF
OMNI10
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
USA SUPPLIER
Woosh Labs
Strong Transparency
83 / 100
Strong
PSR READER OFFER
10% OFF
tony17
Last checkedSeptember 2026
Offer statusSupplier Listed
PSR may earn a commission if you use this supplier link.
RESEARCH INDEPENDENCE
A Discount Is Not a Quality Score
PSR separates supplier discounts from supplier research. A larger discount does not improve a supplier’s PSR Transparency Score. Scores are based on documentation quality, testing evidence, lot traceability, pricing transparency, and supplier transparency.
How PSR Scores Suppliers →RESEARCH CONTEXT
Compare Before You Use a Code
Review the offer alongside the supplier’s documentation signals before visiting its website.
CertaPeptides
PSR Score95 / 100
Public COA accessPublic quality archive
Lot traceability97 / 100
American Peptides
PSR Score94 / 100
Public COA accessPublic lot-number COA lookup
Lot traceability98 / 100
Sparta Labs
PSR Score93 / 100
Public COA accessPublic Lab Results page
Lot traceability97 / 100