Flagged vendors.
Vendors with active fraud flags, manual flags, or composite grades of D, E, or F. We surface this list so consumers can verify a vendor isn’t here before purchase.
FLAGGED
Manually flagged by editorial
Vendors editorial has flagged for serious safety, quality, or business-practice concerns.
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C
Peptide Partners
research · US
Score5.6Peptides11Tests78Flag reason: Independent testing programs report payment problems with this vendor (July 2026). Profile retained for transparency.
Read full Peptide Partners review → -
D
Peptide Sciences
Score4.9Peptides10Tests122Flag reason: Reported shut down in 2025. Listing retained for historical lab-test data.
Read full Peptide Sciences review →
LOW_GRADE
Composite grade of D, E, or F
Vendors whose lab quality, COA transparency, reliability, sentiment, and verified pricing combine to a D or worse.
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D
Peptide Gurus
Read full Peptide Gurus review →Score4.8Peptides8Tests43 -
D
Elite Research USA
Read full Elite Research USA review →Score4.3Peptides5Tests42 -
D
Verified Peptides
research · US
Read full Verified Peptides review →Score4.9Peptides8Tests32 -
D
Amino Amigos
Read full Amino Amigos review →Score4.5Peptides5Tests32 -
D
Alpha-Gen
Read full Alpha-Gen review →Score4.6Peptides6Tests30 -
D
Astro Peptides
research · US
Read full Astro Peptides review →Score4.2Peptides4Tests29 -
D
Loti Labs
Read full Loti Labs review →Score4.7Peptides5Tests29 -
D
Coastal Peptides
Read full Coastal Peptides review →Score4.7Peptides5Tests26 -
D
Injectify
Read full Injectify review →Score4.1Peptides5Tests26 -
D
Pure Rawz
Read full Pure Rawz review →Score4.7Peptides6Tests25 -
D
Deuschem
Read full Deuschem review →Score3.9Peptides6Tests25 -
D
Eternal Peptides
Read full Eternal Peptides review →Score4.5Peptides5Tests23 -
D
Limitless Life Nootropics
research · US
Read full Limitless Life Nootropics review →Score3.7Peptides5Tests22 -
D
Peptides 4 Research
Read full Peptides 4 Research review →Score4.3Peptides5Tests20 -
D
Liberty Peptides
Read full Liberty Peptides review →Score4.6Peptides6Tests19 -
D
Prime Peptides
Read full Prime Peptides review →Score4.5Peptides4Tests19 -
D
Accelerate Labs
Read full Accelerate Labs review →Score5.0Peptides6Tests18 -
D
Peptides For Sale
Read full Peptides For Sale review →Score3.5Peptides4Tests17 -
D
Oasis Peptides
Read full Oasis Peptides review →Score4.9Peptides6Tests15 -
D
Pharma Grade Peptides
Read full Pharma Grade Peptides review →Score5.0Peptides9Tests14 -
D
Amino Asylum
Read full Amino Asylum review →Score4.9Peptides7Tests13 -
D
PeptiLab Research
Read full PeptiLab Research review →Score5.0Peptides4Tests12 -
D
Peptide Technologies
research · US
Read full Peptide Technologies review →Score4.8Peptides4Tests11 -
D
Swiss Chems
Read full Swiss Chems review →Score3.9Peptides4Tests10 -
D
Pure Tested Peptides
Read full Pure Tested Peptides review →Score4.4Peptides6Tests7 -
D
PurePEPS
Read full PurePEPS review →Score4.1Peptides2Tests7 -
D
Biolabshop Limited
Read full Biolabshop Limited review →Score4.5Peptides4Tests6
Methodology
How a vendor gets on this list.
Fraud-flagged means a vendor was reported in the last 90 days for substantively misleading claims, fake COAs, or non-delivery. Manually flagged means editorial has documented a serious concern (label-quantity divergence >30%, repeated COA refusal, recall history, etc.). Low-grade means the composite (40% lab quality, 20% sentiment, 15% COA transparency, 15% reliability, 10% verified $/mg) lands at D, E, or F.
Read the full methodology →