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IGF-1 LR3 Research Reference

April 25, 2026

IGF-1 LR3 Research Reference

IGF-1 LR3 — a long-acting recombinant IGF-1 analog — laboratory research reference and documentation overview.

IGF-1 LR3 (Long R3 IGF-1) is an 83-amino-acid recombinant analog of insulin-like growth factor 1 with an arginine substitution at position 3 and a 13-amino-acid N-terminal extension. The modifications dramatically reduce IGFBP affinity, extending the bioactive half-life relative to native IGF-1.

Documentation expected

  • RP-HPLC purity ≥98%
  • LC-MS confirmed mass (~9111 Da)
  • Endotoxin per analytical method
  • Recombinant production lot record
Research use only. 3 Diamond Labs supplies materials strictly for in vitro and laboratory research. Nothing in this article constitutes medical, therapeutic, or dosage advice for human or animal use.

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