IGF-1 LR3 1mg

IGF-1 LR3 (Long R3 IGF-1) is a recombinant analog of insulin-like growth factor 1. A&A Wellness supplies it as a lyophilized powder in a 1mg vial.

A small-format vial. IGF-1 LR3 is typically handled in microgram-to-milligram quantities in laboratory work, so it is offered in a single 1mg size.

Clear labeling. Each vial is labeled with the compound name and strength.

Where it fits. IGF-1 LR3 is grouped with our growth hormone axis compounds, alongside Tesamorelin and CJC-1295 without DAC + Ipamorelin, though it acts downstream at the IGF-1 receptor rather than on growth hormone release.

IGF-1 LR3 is sold for in-vitro and laboratory research only. It is not a drug, food, cosmetic or dietary supplement, and it is not for human or veterinary use.

Classification. IGF-1 LR3 is an 83-amino-acid analog of human IGF-1. Compared with native IGF-1 (70 amino acids), it carries an arginine substitution at position 3 and a 13-amino-acid N-terminal extension. The literature describes these changes as substantially reducing binding to IGF-binding proteins.

How it has been studied. Because of its reduced binding-protein affinity, IGF-1 LR3 has a long history as a cell-culture reagent. It has been used in in-vitro systems to study IGF-1 receptor signaling, cell proliferation in culture and media formulation, as well as in published preclinical research.

Regulatory status. IGF-1 LR3 is not approved by the FDA as a drug. The A&A Wellness product is a research material intended for laboratory use only.

Why structure matters here. In cell-culture systems, IGF-binding proteins can sequester native IGF-1 and reduce its availability to cells. Researchers have used Long R3 IGF-1 to study IGF-1 receptor signaling with less interference from those binding proteins, which is why it appears frequently in culture-media literature.

Read the full IGF-1 LR3: Research Overview for context and references.

Protect the powder. Store the sealed vial cold, dry and out of direct light. Long-term storage of lyophilized proteins and peptides is conventionally frozen.

Small volumes need care. Low-mass peptides are especially sensitive to repeated freeze-thaw cycles, so laboratories often divide material into aliquots once it is in solution.

Reference guide. Our Peptide Storage Guide covers general conventions for lyophilized and reconstituted material.