Peptide Crafters
Publishes 116 independent COAs from 4 labs across 33 peptides; latest Jul 2026.
Affiliate link — Merit may earn a commission at no extra cost to you. Never affects scores.
› How is this computed?
- Independent COAs (volume × freshness × lab reputation) +40Strong112 COA(s)
- Distinct independent labs +20Strong4 lab(s)
- Median measured purity +24Strong99.7% over 87 COA(s)
- Evidence breadth +10Fair33 peptide(s), 0 lot(s)
Bars show each input's strength versus its plausible maximum. Full methodology on /about.
Measured purity
since Jan 2025 (1.5 years)
99.65%
all-time avg · 83 COAs with purity data
- Last 45d
- 99.65%
- 9 COAs
- Low
- 98.36%
- High
- 99.97%
Latest COA
Jul 2026
Location
🇺🇸US
Founded
—
Status
active
40 peptides carried
Every (peptide, SKU) this vendor lists. Click through for the listing detail and any COAs we have for that exact pair.
116 COAs across 33 peptides
Independent third-party test coverage, summarised per peptide. Each health bar is coloured by that peptide's median measured purity.
- Retatrutide 99.8%19
- Tirzepatide 99.8%9
- Cagrilintide 99.8%6
- Semaglutide 99.8%6
- Sermorelin 99.4%6
Have a vial?
Check its batch
Type the lot or batch code printed on your vial to see if we have an independent COA on file for it.
Verification report
Is Peptide Crafters legit?
Full evidence breakdown: scam signals, lab history, purity data, and FAQs.
View verification report →