For research and laboratory use only — not for human consumption
IGF1-LR3 1mg
Insulin-like Growth Factor 1 Long R3
A modified insulin-like growth factor 1 (IGF-1) analog studied in muscle hypertrophy, tissue repair, and metabolic signaling research models.
Applied automatically per compound at checkout
99%+ HPLC Purity
Independently verified via third-party analysis on every production lot.
Lyophilized Stability
Sterile crystalline cake sealed under vacuum in borosilicate glass vials.
Batch-Traceable COA
Every lot ships with a published certificate of analysis tied to the vial code.
US Research Grade
Cold-chain dispatched from accredited US research facilities.
IGF1-LR3 (Insulin-like Growth Factor 1 Long R3) is a synthetic analog of human IGF-1 featuring an arginine substitution at position 3 and an extended N-terminal sequence that reduces binding to IGF-binding proteins, extending its bioavailability in research models. It is investigated for its effects on muscle hypertrophy, satellite cell activation, tissue repair, and glucose/insulin metabolic signaling pathways. Each 1mg lot is supplied as a sterile lyophilized powder sealed under vacuum in borosilicate glass, independently assayed to ≥99% purity with a batch-traceable certificate of analysis and cold-chain dispatch.
What it does
Serious muscle growth
Direct muscle-cell growth and hypertrophy.
Heal faster
Tissue repair and satellite-cell activation.
Feed the muscle
Better nutrient partitioning between muscle and fat.
Longer action
Reduced binding-protein affinity extends its activity window.
Research context only — these describe laboratory study areas, not health or therapeutic effects, and are not for human consumption.
Read the literature on IGF1-LR3
These links search independent scientific databases for this compound. The publishers own that content — we link out rather than reproduce it, and their findings are not our claims.
IGF1-LR3 Q&A
A modified insulin-like growth factor 1 (IGF-1) analog studied in muscle hypertrophy, tissue repair, and metabolic signaling research models. Studies using this presentation fall within growth-hormone and IGF-1 axis research, including secretagogue receptor binding, downstream signaling, and cell-proliferation models. Each lot is released strictly for in-vitro and laboratory research, not for human or veterinary use.
Every production lot of IGF1-LR3 1mg (lot IGF1LR3-1mg) is independently assayed by accredited third-party laboratories using reverse-phase HPLC and mass spectrometry, and must verify at ≥99% before release. The analytical result is tied to the lot code printed on the vial label, so the vial in hand can be matched to its own data.
Yes — lot IGF1LR3-1mg ships with a batch-traceable Certificate of Analysis documenting identity, purity, mass-spectrometry data, and analytical methodology. The same document is published for download in the public COA directory, so it can be reviewed before or after delivery.
Each unit is supplied as a sterile 1mg lyophilized cake sealed under vacuum in a borosilicate glass vial. Shipments travel in temperature-controlled insulated packaging with cold-chain preservation. Keep the sealed vial at −20 °C for long-term storage and protect it from light; once reconstituted, hold at 2–8 °C.
We dispatch IGF1-LR3 1mg within the United States and internationally from accredited US research facilities, to the verified shipping address on your order. Online delivery is $25 within the US and $30 to Canada (free over $400), with $60 international cold-chain delivery (free over $1,000 to Australia). International customers are responsible for compliance with local import regulations.
Research Peptides supplies IGF1-LR3 exclusively to qualified research professionals and institutional laboratories — universities, independent research facilities, and credentialed scientists working within growth-hormone and IGF-1 axis research, including secretagogue receptor binding, downstream signaling, and cell-proliferation models. Every purchase is subject to internal verification and our terms of sale, and the shipping address should be an appropriate laboratory facility.
Because laboratory reagents are sensitive, we cannot accept returns on opened or reconstituted vials of IGF1-LR3. Damaged, lost, or materially defective shipments are eligible for replacement or refund when reported within 7 days of delivery with supporting documentation.
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For research and laboratory use only — not for human consumption