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Home / IGF-1 Peptides / IGF1-LR3

Rebirth Labs

IGF1-LR3

(7)
IGF-1 LR3 is a synthetic, chemically modified analogue of the naturally occurring Insulin-like Growth Factor-1 (IGF-1). The "LR3" designation refers to the replacement of Glu with Arg at the 3rd position and a 13-amino acid extension at the N-terminus. This structural change significantly lowers its affinity for IGF-binding proteins (IGFBPs), leading to a much longer half-life (approx. 20–30 hours) compared to standard IGF-1.
99.56% Purity

$89.99

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Specifications

Category
IGF-1 Peptides
Molecular Formula
C₄₀₀H₆₂₅N₁₁₁O₁₁₅S₉
Purity
99.56%
Available Options
1mg

Product Information

Tested by Freedom Diagnostics on 9/2/2026

The statements on this website have not been evaluated by the U.S. Food and Drug Administration. The products and information provided by Rebirth Labs are not intended to diagnose, treat, cure, or prevent any disease. Rebirth Labs LLC is a research chemical supplier. We are not a compounding pharmacy or compounding facility as defined under Section 503A of the Federal Food, Drug, and Cosmetic Act, nor are we an outsourcing facility as defined under Section 503B. All products are sold for research, laboratory, or analytical purposes only, and are not for human consumption.

Reviews (7)

Verified Purchase
9/16/2026

Happy with results

Third-party COA matched exactly what was listed — purity was spot on. This has become our go-to source for IGF1-LR3.

— Riley Chen

Verified Purchase
9/13/2026

Third order, still great

Customer service answered my questions quickly and the product arrived exactly as described.

— Alex Turner

8/3/2026

A bit slow to arrive

Product itself seemed fine and matched the COA, but the outer packaging had some minor damage in transit.

— Jordan Blake

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