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All peptides · GLOW · COAs

GLOW COA & lab test results

93 certificates of analysis published by 76 vendors, newest first.

31with readable numbers
99.74%median purity
104%median measured vs label
16testing labs

Labs: AV Analytics, Accumark Labs, Analytical Formulations, Bioviridian, Chromate, Ethos Analytics, Finnrick Analytics, Freedom Diagnostics, ILS Laboratories, Janoshik, Kovera Labs, Krause Analytical, MDx BioAnalytical Laboratory, MZ Biolabs, Prime Analytical Laboratories, Vanguard Laboratory.

VendorLabDateLabelMeasuredPurity
Polaris PeptidesAccumark Labs2026-09-3050 mg–99.93%View
Valor peptidesAccumark Labs2026-09-2470 mg61.79 mg (88%)99.84%View
Valor peptidesAccumark Labs2026-09-1870 mg72.09 mg (103%)99.88%View
PeptidologyVanguard Laboratory2026-09-17––99.8%View
Amplified AminoJanoshik2026-09-1470 mg––View (image)
NexaphJanoshik2026-09-1470 mg22.8 mg (33%)–View
The Naughty NeedleFreedom Diagnostics2026-08-2870 mg81.76 mg (117%)99.8%View
Alpha BioMed–2026-08-27–––View (image)
Bulk Peptide SupplyCOA concernsAV Analytics2026-08-27––99.74%View
Longevity ProsJanoshik2026-08-26–––View (image)
Paramount PeptidesAccumark Labs2026-08-21–––View (image)
Alpha BioMed–2026-08-18–––View (image)
SoliraChromate2026-08-1770 mg–99.808%View
Pure Peptide LabsFreedom Diagnostics2026-08-1170 mg–99.75%View
Certified Peptides–2026-07-3170 mg––View (image)
Hangzhou Mandy BiotechnologyJanoshik2026-07-3170 mg––View (image)
Peptide PartnersKovera Labs2026-07-3170 mg76.8 mg (110%)99.642%View
Regenerative ResearchILS Laboratories2026-07-3170 mg72.6 mg (104%)99.88%View
Skye PeptidesAccumark Labs2026-07-3050 mg54.77 mg (110%)99.91%View
Bluebonnet PeptidesILS Laboratories2026-07-2470 mg71.72 mg (102%)99.46%View
PeptagonAccumark Labs2026-07-2470 mg87.94 mg (126%)99.74%View
BioPrecise LLCCOA concernsFinnrick Analytics2026-07-22––99.7%View
Core PeptidesVanguard Laboratory2026-07-2270 mg–99.5%View
Glacier AminosKovera Labs2026-07-1670 mg76.05 mg (109%)99.71%View
Paramount PeptidesAccumark Labs2026-07-06–––View (image)
Alpha-GenFreedom Diagnostics2026-07-0370 mg–99.37%View
NuLife PeptidesFreedom Diagnostics2026-07-0370 mg66.13 mg (94%)99.37%View
Lotus BioILS Laboratories2026-0770 mg–99.7%View
Onyx ResearchFreedom Diagnostics2026-06-2670 mg76.02 mg (109%)99.6%View
BioHack LondonJanoshik2026-06-2370 mg83.55 mg (119%)–View
Evolve BioPepEthos Analytics2026-06-20–––View (image)
TydesJanoshik2026-06-1170 mg––View (image)
Huatai PeptideFreedom Diagnostics2026-05-1970 mg74.18 mg (106%)99.88%View
Loti LabsBioviridian2026-05-1770 mg––View (image)
Licensed PeptidesVanguard Laboratory2026-05-1170 mg––View (image)
UtherJanoshik2026-05-04–––View
Junli PeptideCOA concernsJanoshik2026-04-30–––View (image)
Bluebonnet PeptidesKrause Analytical2026-04-2250 mg56.64 mg (113%)99.6%View
Alpha PeptidesAnalytical Formulations2026-04-0970 mg72.43 mg (103%)–View
Sigma PeptidesPrime Analytical Laboratories2026-03-1870 mg––View (image)
Pharma Grade PeptidesJanoshik2026-02-2670 mg––View (image)
Amino EssenceCOA concernsJanoshik2026-01-2370 mg––View (image)
Nexa LabsMZ Biolabs2025-11-25–––View (image)
Amino AmigosMZ Biolabs2025-11-18–112.93 mg99.94%View
Pura PeptidesFreedom Diagnostics2025-10-3170 mg––View (image)
Alpha PeptidesFreedom Diagnostics2025-10-2170 mg66.15 mg (95%)99.52%View
Peptide HavenFreedom Diagnostics2025-09-2370 mg66.99 mg (96%)99.46%View
Huaian Banting TradingJanoshik2025-09-1870 mg––View (image)
Huaian Dinglin TradingJanoshik2025-09-1870 mg––View (image)
Aura PeptidesCOA concernsVanguard Laboratory2025-09-16–––View (image)
HealthTide BiotechJanoshik2025-08-2670 mg––View (image)
GLP Keep Body PeptideCOA concernsJanoshik2025-08-1170 mg––View (image)
PeptiSlimJanoshik2025-07-1070 mg––View (image)
LMRJanoshik2025-07-0770 mg––View (image)
Wuhan Newtop BiotechJanoshik2025-07-0470 mg––View (image)
Zen PeptidesJanoshik2025-06-23–––View (image)
Zen PeptidesJanoshik2025-06-23–––View (image)
Allen Biotechnology Co ABCJanoshik–70 mg––View (image)
Andy Peps StudioJanoshik–50 mg––View (image)
Andy Peps StudioJanoshik–50 mg––View (image)
Andy Peps StudioJanoshik–70 mg––View (image)
Atomik Labz–––––View (image)
BeiBangAnJanoshik–70 mg––View (image)
Biolongevity LabsMDx BioAnalytical Laboratory––––View (image)
HB PeptidesJanoshik–70 mg––View (image)
HkRoidsCOA concerns––70 mg––View (image)
InjectifyJanoshik––––View (image)
InjectifyJanoshik––––View (image)
Jinan Elitepeptide Chemical JEC JCEJanoshik–70 mg––View (image)
Licensed PeptidesVanguard Laboratory–70 mg––View (image)
Longevity PlanMZ Biolabs–––99.2%View
Modern Aminos––70 mg––View (image)
My Pure PeptideJanoshik–70 mg68.21 mg (97%)–View
Nantong Guangyuan Chemical GYCJanoshik–70 mg––View (image)
Nantong Guangyuan Chemical GYCJanoshik–70 mg––View (image)
Peptides 4 Research–––––View (image)
Peptides 4 ResearchMDx BioAnalytical Laboratory––––View (image)
Peptronix Bio PTBJanoshik–70 mg––View (image)
Platinum CryoChromate––––View (image)
Prime PeptidesJanoshik––––View (image)
PurePeptides––70 mg––View (image)
Shanghai Sigma Audley SSAJanoshik–70 mg––View (image)
Shanghai Wibson Biotechnology WBSJanoshik–70 mg––View (image)
Skye PeptidesJanoshik–70 mg––View (image)
SP ResearchChromate––––View (image)
Tianjin Finder Chemical TFCJanoshik––––View (image)
TydesJanoshik–45 mg––View (image)
Verified Peptides–––––View (image)
Verified Peptides–––––View (image)
Verified Peptides–––––View (image)
WKC Walker ChemicalsJanoshik–70 mg––View (image)
YuanSense TechJanoshik––––View (image)
YuanSense TechJanoshik––––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 GLOW prices and lab-verified vendors.