Description
IGF-1 LR3 1mg — Extended Half-Life Growth Factor Research Peptide
IGF-1 LR3 is a synthetic analogue of insulin-like growth factor 1, modified to reduce IGF-binding protein affinity and extend biological half-life for research purposes. Peptalix Labs supplies IGF-1 LR3 1mg at a verified purity of 99.14%, independently confirmed by Freedom Diagnostics, with a negative fentanyl screen. GMP-sourced, white lyophilised powder. Fast USA same-day shipping with delivery to Canada, Australia, the UK and Europe.
Certificate of Analysis
Every IGF-1 LR3 1mg vial is independently batch-tested by Freedom Diagnostics. COA Accession #2606120650 (reported 06/15/2026) confirmed purity at 99.14% with net peptide content of 1.26mg per vial, Lot 140-01-DK.
Research Background
IGF-1 LR3 research examines downstream IGF-1 receptor signalling and reduced IGFBP binding affinity relative to native IGF-1. Frequently studied alongside Sermorelin and the Tesamorelin + Ipamorelin blend across the broader GH/IGF-1 axis.
Product Specifications
- Product
- IGF-1 LR3 1mg
- Peptide Class
- Long-Arg3-IGF-1 Analogue
- Appearance
- White Lyophilised Powder
- Fentanyl Screen
- Negative
- Purity
- 99.14% (HPLC-UV + Mass Spectrometry)
- Net Peptide Content
- 1.26 mg per vial
- Lot Number
- 140-01-DK
- COA Accession #
- 2606120650
- Testing Lab
- Freedom Diagnostics
- Reported Date
- 06/15/2026
- Storage
- Lyophilised: -20C. Reconstituted: 2-8C, use within 28 days
- Shipping
- USA same-day. Canada, Australia, UK, Europe
- Research Use
- In-vitro laboratory research only
Reconstitution Guide
Reconstitute using sterile bacteriostatic water. Inject slowly down the inner wall of the vial and gently swirl until dissolved. Never shake. Store reconstituted solution at 2-8C and use within 28 days.
Shipping
Same-day USA dispatch before daily cut-off Monday to Friday. International delivery to Canada, Australia, UK and Europe in 5-12 business days.
Related Growth Hormone Research Compounds
- Sermorelin 10mg — GHRH Analogue Research Peptide
- Tesamorelin + Ipamorelin Blend 16mg
- BPC-157 20mg — Body Protection Compound Healing Peptide
- TB-500 10mg — Thymosin Beta-4 Healing Peptide
- Thymosin Alpha-1 10mg — Immune Research Peptide
Scientific References
- Francis et al. — IGF-1 LR3 extended half-life research (PubMed)
- NIH NLM — IGF-1 LR3 and IGFBP binding affinity research
- ClinicalTrials.gov — Search: IGF-1 LR3 Research
Research Use Only. Not FDA-approved for human consumption, veterinary use or clinical application.
Frequently Asked Questions
What is IGF-1 LR3 peptide?
IGF-1 LR3 (Long-Arg3-IGF-1) is a synthetic analogue of insulin-like growth factor 1, modified with an extended 13-amino-acid sequence and an arginine substitution to reduce binding to IGF-binding proteins, extending its biological half-life for research purposes. Peptalix Labs supplies IGF-1 LR3 1mg at 99.14% purity, confirmed by Freedom Diagnostics.
What purity is Peptalix Labs IGF-1 LR3 1mg?
Independently batch-tested at 99.14% purity by Freedom Diagnostics using HPLC-UV and mass spectrometry. Net peptide content 1.26mg per vial, Lot 140-01-DK, Accession #2606120650, with a negative fentanyl screen.
Why is IGF-1 LR3 modified compared to native IGF-1?
The Long-Arg3 modification reduces binding affinity to IGF-binding proteins (IGFBPs), which extends the peptide’s biological half-life in research models compared to native IGF-1, allowing more sustained research exposure.
How is IGF-1 LR3 peptide stored?
Supplied as white lyophilised powder. Store the sealed vial at -20C prior to reconstitution. Once reconstituted with bacteriostatic water, store at 2-8C and use within 28 days.
How do I reconstitute IGF-1 LR3 1mg?
Draw the desired volume of sterile bacteriostatic water into a fresh syringe and inject slowly down the inner wall of the vial. Gently swirl until fully dissolved. Never shake.
What research has been published on IGF-1 LR3?
IGF-1 LR3 has been studied for its reduced IGFBP binding affinity and extended half-life relative to native IGF-1, with research examining downstream IGF-1 receptor signalling and cellular proliferation pathways.
Can I buy IGF-1 LR3 peptide online in the USA?
Yes. Peptalix Labs offers IGF-1 LR3 1mg for purchase online for qualified USA researchers. COA-verified at 99.14% purity, GMP-sourced, same-day shipping.
Does Peptalix Labs ship IGF-1 LR3 internationally?
Yes, to Canada, Australia, the United Kingdom and most of Europe, with tracked delivery in 5-12 business days.
What is the difference between IGF-1 and IGF-1 LR3?
Native IGF-1 binds readily to IGF-binding proteins, limiting its bioavailability. IGF-1 LR3 has a modified structure that reduces this binding, studied for extended activity duration in research models.
What is the appearance of IGF-1 LR3 1mg?
White lyophilised freeze-dried powder, as confirmed in the Freedom Diagnostics COA (Lot 140-01-DK).
Is IGF-1 LR3 peptide legal to buy in the USA?
Yes, as a research chemical for qualified researchers conducting in-vitro laboratory studies. Not FDA-approved for human use. Sold strictly for research purposes.
What is the research dosage range for IGF-1 LR3?
Published IGF-1 LR3 research has used microgram-level dosing parameters depending on study model, given its potency. Peptalix Labs does not provide dosing guidance, as our products are sold for research use only.
Which lab verified Peptalix Labs IGF-1 LR3 purity?
Freedom Diagnostics, a US-based independent laboratory operated by Principal Chemist Alex Johnson. Accession #2606120650, reported 06/15/2026.
Can IGF-1 LR3 be studied alongside growth hormone secretagogues?
Yes. IGF-1 LR3 acts downstream of growth hormone in the GH/IGF-1 axis, and is frequently studied alongside GHRH analogues like Sermorelin and the Tesamorelin + Ipamorelin blend for comprehensive GH-axis research.
What other growth hormone research peptides does Peptalix Labs offer?
Our growth hormone category includes Sermorelin and the Tesamorelin + Ipamorelin blend — all COA-verified and GMP-sourced.
