Janoshik Labs publishes a public verification portal. Any test attributed to this lab can be looked up and confirmed directly with the lab — so this result doesn't rest on our review alone.
This independent lab analysis confirms IGF-1 LR3 1mg from Growth Guys at 98.509% purity. The test was conducted by Janoshik Labs on November 27, 2025, with a tested quantity of 1.18mg across multiple vials (1.18mg, 1.20mg, 1.23mg).
IGF-1 LR3 is a long-chain insulin-like growth factor analog researched for its potential role in muscle growth, recovery acceleration, and tissue development. A purity level of 98.509% indicates high-grade synthesis with minimal impurities.
The full certificate of analysis is available for verification at www.janoshik.com/verify/ using the unique key 445TK79U8QXT.
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