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All peptides · Melanotan II · COAs

Melanotan II COA & lab test results

68 certificates of analysis published by 63 vendors, newest first.

36with readable numbers
99.83%median purity
107%median measured vs label
16testing labs

Labs: AV Analytics, Accumark Labs, Analytical Formulations, BTLabs, BioRegen, Bioviridian, Chromate, Finnrick Analytics, Freedom Diagnostics, ILS Laboratories, Janoshik, Kovera Labs, MZ Biolabs, Qorix Labs (Tianjin), Vanguard Laboratory, hydroresearchpeptides.com.

VendorLabDateLabelMeasuredPurity
Valor peptidesAccumark Labs2026-09-2410 mg10.473 mg (105%)99.87%View
CertaPeptidesJanoshik2026-09-1810 mg10.45 mg (105%)99.455%View
Pure Peptide LabsKovera Labs2026-09-1410 mg10.81 mg (108%)99.472%View
Shanghai Leader Peptide BiotechnologyCOA concernsQorix Labs (Tianjin)2026-09-1110 mg–99.74%View
Bulk Peptide SupplyCOA concernsAV Analytics2026-09-0610 mg10.21 mg (102%)99.79%View
Domestic PepsFreedom Diagnostics2026-09-0110 mg9.52 mg (95%)99.89%View
The Naughty NeedleFreedom Diagnostics2026-08-2810 mg11.33 mg (113%)99.9%View
Crush ResearchILS Laboratories2026-08-2410 mg10.48 mg (105%)99.83%View
My Pure PeptideJanoshik2026-08-2410 mg11.18 mg (112%)99.86%View
Flycn PeptideJanoshik2026-08-21–––View (image)
NextGen HealthILS Laboratories2026-08-1810 mg10.4 mg (104%)99.99%View
Elite Research USAFreedom Diagnostics2026-08-1710 mg10.89 mg (109%)99.83%View
Orbitrex PeptidesFreedom Diagnostics2026-08-15–10.55 mg99.72%View
Go Alpha Labs Peptides–2026-08-14–––View (image)
Mai PeptideFreedom Diagnostics2026-08-0510 mg14.84 mg (148%)99.97%View
SaiyanMedBTLabs2026-08-0410 mg––View (image)
Alpha-GenFreedom Diagnostics2026-08-0110 mg8.63 mg (86%)99.38%View
Peptide Group Buy PGBJanoshik2026-07-2710 mg11.66 mg (117%)99.85%View
Hangzhou Mandy BiotechnologyJanoshik2026-07-2510 mg––View (image)
PepLab SolutionsKovera Labs2026-07-2410 mg9.25 mg (93%)99.793%View
PeptagonAccumark Labs2026-07-2410 mg10.51 mg (105%)99.72%View
BioPrecise LLCCOA concernsFinnrick Analytics2026-07-2210 mg–99.5%View
PeptimeFreedom Diagnostics2026-07-2110 mg10.8 mg (108%)99.86%View
Pura PeptidesFreedom Diagnostics2026-07-2110 mg––View (image)
Swiss ChemsJanoshik2026-07-2110 mg––View (image)
Onyx ResearchFreedom Diagnostics2026-07-1710 mg12.35 mg (123%)99.84%View
Nexa LabsFreedom Diagnostics2026-07-0610 mg––View (image)
Paramount PeptidesAccumark Labs2026-07-0610 mg––View (image)
Amino UsaBioRegen2026-07-0210 mg10.2 mg (102%)99.76%View
Liberty Peptides–2026-06-3010 mg8.83 mg (88%)99.808%View
NextGen HealthILS Laboratories2026-06-2510 mg10.59 mg (106%)99.88%View
Amplified AminoJanoshik2026-06-2210 mg11.15 mg (112%)99.936%View
Swiss ChemsJanoshik2026-06-1610 mg––View (image)
Amino AsylumJanoshik2026-05-28–––View (image)
Bluebonnet PeptidesILS Laboratories2026-05-2610 mg10.71 mg (107%)99.93%View
Simple PeptideFreedom Diagnostics2026-05-2310 mg12.4 mg (124%)99.83%View
Loti LabsBioviridian2026-05-1710 mg––View (image)
Licensed PeptidesVanguard Laboratory2026-05-1110 mg––View (image)
NextGen HealthILS Laboratories2026-05-0610 mg10.65 mg (107%)99.81%View
TydesJanoshik2026-05-01––99.95%View
Junli PeptideCOA concernsJanoshik2026-04-29–––View (image)
Wolverine Peptides–2026-04-22––99.36%View
PepturionJanoshik2026-03-31–––View (image)
Alpha PeptidesAnalytical Formulations2026-03-3010 mg10.68 mg (107%)99.9%View
Regenerative ResearchBTLabs2026-03-2611 mg11.1 mg (101%)99.8%View
Peptide HavenFreedom Diagnostics2026-01-0710 mg11.95 mg (119%)99.49%View
Hydro Researchhydroresearchpeptides.com2025-11-2010 mg8.18 mg (82%)99.455%View
HkRoidsCOA concernsFreedom Diagnostics2025-11-0510 mg12.94 mg (129%)99.924%View
Nuscience PeptidesFreedom Diagnostics2025-11-0110 mg13.07 mg (131%)99.562%View
Huaian Banting TradingJanoshik2025-09-1810 mg––View (image)
Huaian Dinglin TradingJanoshik2025-09-1810 mg––View (image)
Aura PeptidesCOA concernsVanguard Laboratory2025-09-16–––View (image)
Amino AmigosMZ Biolabs2025-08-0710 mg7.14 mg (71%)98.75%View
Bulk Peptide WholesaleChromate2025-04-3010 mg––View (image)
Allen Biotechnology Co ABCJanoshik––––View (image)
BeiBangAnJanoshik–10 mg––View (image)
Cocer PeptidesJanoshik––––View (image)
Emlin BioScience ExchangeBioviridian–10 mg––View (image)
Emlin BioScience Exchange––10 mg––View (image)
InjectifyJanoshik––––View (image)
Longevity Plan–––––View (image)
LP Peptide––10 mg––View (image)
Modern AminosFreedom Diagnostics–10 mg––View (image)
Platinum CryoChromate–10 mg––View (image)
PugPepsCOA concerns––210 mg––View (image)
PurePeptides––10 mg––View (image)
WKC Walker ChemicalsJanoshik––––View (image)
WKC Walker ChemicalsJanoshik–10 mg––View (image)

A vendor's COA shows one tested sample, not every batch. Numbers are filled in only where the document is readable text; image-only COAs are linked without numbers. Vendors banned for fake reports are excluded. Compare Melanotan II prices and lab-verified vendors.