IGF-1 Purity: 10 Lab Tests Across 9 Vendors

105 studies on IGF-1 curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

We tested 10 IGF-1 batches across 9 manufacturers

Independent certificate-of-analysis evidence from third-party labs — the data behind the studies. Updated as new COAs are verified. Read the full grey-market analysis →

99.16%
Avg purity
10
Batches tested
9
Manufacturers
ManufacturerBatchesAvg purity
Growth Guys Canada 2 99.46% View COA →

Recent certificates: #15360 (98.134%) · #20106 (98.134%) · #23248 (99.456%) · #23216 (99.563%) · #18332 (99.139%) · #17858 (99.282%)

Vendors who tested IGF-1

Manufacturers with published third-party certificates of analysis for IGF-1. Open a vendor to see every batch we've verified.

Growth Guys Canada 2 COAs · 99.5% avg thelobster 1 COA · 99.7% avg Cocer Peptides 1 COA · 99.6% avg Peptide Gurus 1 COA · 99.5% avg Eros Peptides 1 COA · 99.4% avg www.qinglishangmao.com 1 COA · 99.3% avg Chilton Labs 1 COA · 99.1% avg Chameleon Peptides LLC 1 COA · 98.1% avg Panda Peptides LLC 1 COA · 98.1% avg

Research tools

Free, no account — handy when you're working with IGF-1.

Reconstitution calculator Bac water, concentration & insulin-unit math Verify a COA Look up a report number against our corpus