Long R3 Insulin-Like Growth Factor-1. A long-acting, highly potent IGF-1 analogue for research into growth factor signaling pathways. For laboratory research purposes only.
ORDER NOW →Single 100mcg vial. Standard research quantity for IGF-1 receptor studies. HPLC verified, lyophilized, COA included.
Add to CartSingle 1mg vial for comprehensive IGF-1 signaling research. Best per-mcg value for extended studies. COA included.
Add to CartFive 1mg vials at our best bulk rate. Save 69% vs single 100mcg vials. Ideal for comprehensive long-term research programs.
Add to CartEvery IGF-1 LR3 batch HPLC tested and verified. Consistent purity for reliable research results.
Industry-lowest pricing on premium IGF-1 LR3 research peptide in the USA.
Ships within 24 hours from US warehouse. Cold-pack shipping available for temperature-sensitive orders.
Full Certificate of Analysis with mass spectrometry data included with every order.
| Specification | Details |
|---|---|
| Common Name | IGF-1 LR3 / Long R3 IGF-1 |
| Class | Insulin-Like Growth Factor Analogue |
| Modification | Arg substitution at position 3, 13-amino acid N-terminal extension |
| Half-life | ~20-30 hours (vs ~15 min for native IGF-1) |
| Purity | ≥99% (HPLC Verified) |
| Form | Lyophilized Powder |
| Storage | -20°C, protect from light and moisture |
| Available Sizes | 100mcg, 1mg |
| Molecular Weight | ~9,111 Da |
| Certificate | COA Included |
IGF-1 LR3 is a modified analogue of insulin-like growth factor-1, featuring an arginine substitution at position 3 and a 13-amino acid N-terminal extension. These modifications significantly reduce its binding to IGF binding proteins (IGFBPs), resulting in a much longer active half-life than native IGF-1 — making it a valuable tool for sustained IGF receptor research.
IGF-1 LR3 is used in laboratory research to study IGF receptor signaling pathways, cell proliferation and differentiation, muscle cell biology, and growth factor-mediated gene expression. Its extended activity profile makes it particularly useful for studies requiring sustained IGF-1R activation.
All AscendLabz IGF-1 LR3 products are guaranteed at minimum 99% purity, verified by HPLC analysis with mass spectrometry confirmation. A full Certificate of Analysis is included with every order for complete documentation.
RESEARCH USE ONLY: All products sold by AscendLabz are strictly for laboratory research purposes only. Not for human consumption. Not for veterinary use. Must be handled by qualified research professionals in a controlled laboratory setting.
IGF-1 LR3 is a long Arg3 analog of insulin-like growth factor 1 with reduced IGFBP affinity and extended half-life studied as part of the insulin-like growth factor analog category. It is investigated in pre-clinical and in-vitro research models for its activity on IGF-1 receptor signaling, PI3K/Akt activation, and myocyte research pathways studied in vitro. The compound is supplied as a lyophilized powder of ≥99% HPLC-verified purity and is intended exclusively for laboratory research use under qualified scientific supervision.
AscendLabz IGF-1 LR3 is sourced from cGMP-aligned synthesis facilities and validated for identity, purity, and counter-ion content prior to release. Each lot is independently tested by HPLC, and a Certificate of Analysis (COA) detailing peak area, retention time, and batch number is provided with every order. This level of documentation is intended to support reproducible research and clear chain-of-custody record-keeping in academic and independent laboratory environments.
For research workflows, IGF-1 LR3 is most commonly characterized in cell-culture and isolated-tissue models where investigators examine IGF-1 receptor binding with reduced IGFBP sequestration alongside complementary compounds in the IGF analog research peptides class. Reference standards and dose-response controls should be established by each laboratory prior to experimental use, and all material should be handled by trained personnel using appropriate personal protective equipment.
Storage: Lyophilized IGF-1 LR3 is stable at -20°C in sealed vials. Reconstituted peptide should be aliquoted, refrigerated at 2-8°C, and used within 14 days. Lyophilized peptides should be kept in original sealed packaging until use to prevent moisture uptake.
Reconstitution: Bring the lyophilized vial to room temperature before opening. Reconstitute with bacteriostatic water or 0.6% acetic acid by injecting solvent down the inner wall of the vial; do not direct the stream onto the lyophilized cake. Gently swirl — do not vortex or shake — until fully dissolved. Allow 5-10 minutes for complete solvation.
Handling: Use sterile technique throughout. Wipe vial septa with isopropyl alcohol before each draw. Document reconstitution date, solvent volume, and resulting concentration on the vial label for traceability.
Every batch of IGF-1 LR3 is analyzed by reverse-phase HPLC and confirmed to be ≥99% pure. Mass spectrometry confirms molecular identity, and counter-ion / residual-solvent panels are performed where applicable. The full Certificate of Analysis ships with each order and is also archived by lot number.
No. IGF-1 LR3 is supplied strictly for in-vitro laboratory research and is not approved by the FDA, EMA, or any regulatory authority for human or veterinary therapeutic use. It must not be administered to humans or animals. By purchasing, you confirm you are a qualified researcher and the material will be used only in a controlled laboratory setting.
All orders ship from the USA via tracked courier within 24-48 hours of payment confirmation. Domestic delivery typically arrives within 2-5 business days in discreet, temperature-stable packaging. Tracking is provided by email at the time of dispatch.
AscendLabz prices IGF-1 LR3 competitively while maintaining ≥99% HPLC-verified purity and a full COA. Bulk-vial bundles offer additional savings for laboratories ordering multi-month research supply. Pricing is reviewed monthly to remain among the most affordable verified-purity sources in the United States.
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Yes. Most laboratories order IGF-1 LR3 together with complementary compounds from the IGF analog research peptides category. Combined orders ship together with a single COA package and qualify for bulk-tier pricing. See the related compounds section below for commonly paired research peptides.
Researchers ordering IGF-1 LR3 frequently study it alongside these related compounds:
GDF-8 · Ipamorelin · Sermorelin · Tesamorelin