IGF-1 LR3
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≥99% purity verified by independent HPLC and mass spectrometry (MS) through Janoshik Analytical. Intended for laboratory research use only; not for human consumption, diagnosis, or treatment. View transparency report Compliance PDFs
Documentation & standards
- Batch Traceability: Lot Numbers, Records and Public Lookup
- How to Read a Peptide Certificate of Analysis (COA)
- Peptide Storage and Handling: Temperature, Light and Stability
Research-grade peptide studied in growth factor signaling and cellular pathway research.
Supplied in an Ares dial-a-dose dispensing pen instead of a vial. Choose a prefilled pen, or a cartridge refill if you already own the Ares Precision Pen.
Mix and match any items — discount applies automatically at checkout.
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Batch transparency
- Batch / lot
- Released with your order
- Testing lab
- Janoshik Analytical
- Purity (HPLC)
- ≥99% target spec
- Identity (MS)
- Available on request
- Report issued
- Available on request
- Full PDF report
- By request
Every request returns a reference number and a live status page. See all published batch records →
For laboratory research use only — not for human or veterinary use.
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Intended strictly for research and laboratory use only. Not for human consumption.
IGF-1 LR3 — Growth Factor Research Peptide
IGF-1 LR3 is a research-grade peptide studied in growth factor signaling and cellular pathway research. Designed for laboratory use only with a focus on purity, consistency, and batch traceability.
Third-party purity testing available upon request.
Key Features
- Research-grade peptide
- Growth factor pathway research focus
- High-purity batch standards
- Third-party purity testing available upon request
IGF-1 LR3 Research Applications
- Growth factor signaling studies
- Cellular pathway models
- Laboratory research applications
Research Classification
Storage Information
IGF-1 LR3 Purity & COA Verification
For laboratory research use only. Not for human consumption, diagnosis, or treatment.
IGF-1 LR3 — Compound Information & Scientific Literature
Reference data for laboratory personnel: molecular identity, storage and stability handling, our analytical testing panel, and peer-reviewed literature indexed on PubMed.
Molecular Profile
| Compound | IGF-1 LR3 |
|---|---|
| Molecule type | Recombinant IGF-1 analog (83 aa) |
| Class | Growth Factor Peptide |
| Catalog category | Growth Hormone |
| Physical format | Lyophilized Vial |
Handling Reference
-20 °C, protected from light and moisture
24 months from date of manufacture in the sealed vial
2-8 °C (refrigerated), do not freeze after reconstitution
Stability studied out to approximately 28 days under continuous refrigeration
Analytical Testing Panel
Verified by Janoshik Analytical — full panel, every batch. Second independent lab confirmation is being added batch by batch.
Quantifies the main peak against related-substance peaks, so the stated purity percentage is measured rather than assumed.
Every IGF-1 LR3 lot passes all 8 stages before it is released. Expand a stage to see the method and why we run it.
- Method on the COARP-HPLC (UV 214 nm)Why Ares runs it
Quantifies the main peak against related-substance peaks, so the stated purity percentage is measured rather than assumed.
- Method on the COAQuantitative HPLC mass/concentration assayWhy Ares runs it
Confirms the vial actually contains the labeled amount — purity alone says nothing about how much material is in the vial.
- Method on the COAMass Spectrometry (ESI-MS)Why Ares runs it
Confirms the measured molecular mass matches the declared compound — the check that catches a mislabeled or substituted vial.
- Method on the COAICP-MSWhy Ares runs it
Screens for elemental contaminants carried over from synthesis, reagents, or packaging.
- Method on the COAMembrane filtration, USP <71> methodologyWhy Ares runs it
Checks the finished lyophilized vial for microbial growth after fill and closure.
- Method on the COALAL assay (kinetic chromogenic)Why Ares runs it
Measures bacterial endotoxin load, a contamination marker that purity testing alone will not reveal.
- Method on the COAIndependent batch review against release specificationWhy Ares runs it
Ties the analytical numbers back to the paperwork — the lot you receive is the lot on the certificate.
- Method on the COALC-MS/MS targeted screenWhy Ares runs it
A contamination check most research suppliers never run, and the reason we run it on every batch regardless of compound.
PASS reflects the batch release standard every lot must meet before it ships. Per-lot results are published on that lot's Certificate of Analysis.
Peer-Reviewed References
The somatotropic axis in neonatal calves can be modulated by nutrition, growth hormone, and Long-R3-IGF-I
Hammon H et al. · The American journal of physiology, 1997 · PMID 9252489
View sourceDetection of His-tagged Long-R³-IGF-I in a black market product
Kohler M et al. · Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society, 2010 · PMID 20675162
View sourceEnhancement of maternal lactation performance during prolonged lactation in the mouse by mouse GH and long-R3-IGF-I is linked to changes in mammary signaling and gene expression
Hadsell DL et al. · The Journal of endocrinology, 2008 · PMID 18577570
View sourceDesign and characterisation of long-R3-insulin-like growth factor-I muteins which show resistance to pepsin digestion
Bryant KJ et al. · Growth factors (Chur, Switzerland), 1996 · PMID 8919033
View sourceEffect of recombinant porcine IGFBP-3 on IGF-I and long-R3-IGF-I-stimulated proliferation and differentiation of L6 myogenic cells
Xi G et al. · Journal of cellular physiology, 2004 · PMID 15254966
View source
References are listed for literature-identification purposes only. Ares Research is not affiliated with the authors, journals, or institutions cited.
This material is supplied for laboratory and research use only. It is not for human or veterinary use, and it is not a drug, food, or cosmetic. These statements have not been evaluated by the Food and Drug Administration. No information on this page is intended to diagnose, treat, cure, or prevent any condition.
Read the IGF-1 LR3 research
IGF-1 LR3 safety profile: hypoglycemia, IGFBP binding considerations, monitoring, and contraindications.
Read article →A complete research overview of IGF-1 LR3 — a long-acting analogue of insulin-like growth factor 1. Covers mechanism of action, binding protein resistance, anabolic signaling, muscle cell research, and comparison to native IGF-1.
Read article →Published benefits, side effects, and mecasermin comparisons for IGF-1 LR3 — the binding-protein-resistant IGF-1 analog used in muscle and biotech research.
Read article →Recombinant HGH (somatropin) vs IGF-1 LR3 (long-arginine-3 IGF-1) — side-by-side research comparison of upstream hormone vs downstream effector.
Read article →Comprehensive research guide to the HGH/IGF-1 axis — hepatic IGF-1 production, IGFBPs 1–6, the ternary complex, PI3K/AKT/mTOR signalling, and the systemic vs local IGF-1 distinction.
Read article →Recombinant human growth hormone (somatropin) is a 191-amino acid single-chain polypeptide identical to pituitary-derived GH — the definitive reference compound for GH axis research, with the most extensive clinical evidence base of any GH-related intervention and a fully characterised receptor signalling mechanism spanning JAK2/STAT5, MAPK, and PI3K pathways.
Read article →How Ares compares for IGF-1 LR3
Independent, documentation-first breakdowns of the vendors researchers most often ask about for this compound. COA verification, US shipping, and sourcing transparency, side by side.
Frequently bought together
Curated complements for this compound — researchers most often pair it with these.
Research Use Disclaimer
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All testing documentation and COA data are provided for laboratory research use only and are not intended to support human consumption, diagnostic, or therapeutic use.
Independent Certificate of Analysis
Independently tested by In-House Verification. Verified and batch-tracked by Ares Research. Additional reports available upon request.
No fillers. No shortcuts. Only verified compounds.
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