
IGF-1 LR3
Growth- 1 × IGF-1 LR3 1MG€89,99
- 1 × Bacteriostatic Water€9,95
- 1 × Needles · 5 needles€4,95
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For research use only. Not for human consumption. These products are intended for laboratory research and are not drugs, foods, or cosmetics.
About IGF-1 LR3
IGF-1 LR3 is a synthetic peptide and analog of insulin-like growth factor 1 with a modified amino acid sequence. This results in an extended half-life and increased stability under laboratory conditions. The peptide is used in scientific in-vitro and in-vivo research into the IGF-1 receptor pathway.
For research purposes only. Not for human consumption.
Quality & Testing
Every batch is independently tested by a certified external laboratory to verify purity, identity, and composition. Each analysis uses advanced methods such as HPLC and mass spectrometry, guaranteeing the highest research quality.
- Verified purity: every batch is tested for peptide integrity and composition.
- Third-party certified: analysis is performed by accredited laboratories using validated testing procedures.
- Transparent results: the corresponding Certificate of Analysis (COA) and analytical data are on our Lab Results page.
All My Peptides Lab products undergo strict processing, temperature control, and documentation to guarantee consistency and traceability from production to shipment.
Peptide specifications
- Molecular formula
- C₄₀₀H₆₂₅N₁₁₁O₁₁₅S₉
- Molecular weight
- 9117.6 g/mol
- CAS number
- 946870-92-4
- Amino acid sequence
- Extended IGF-1 analog (83 amino acids; Arg³, 13-amino-acid N-terminal extension)
- Number of amino acids
- 83
- Purity
- ≥99% (HPLC)
- Appearance / form
- White lyophilized powder
- Reconstitution
- Bacteriostatic water
- Storage
- −20 °C, protected from light; avoid freeze-thaw cycles
- Freeze-thaw cycles
- Avoid repeated cycles
- Shipping
- Ships in 24 hours
- Research use
- In vitro only
Important questions answered by professionals
*Answered by independent medical researchers and licensed physicians
What is IGF-1 LR3 as a research protein?
IGF-1 LR3 (Long Arginine 3-IGF-1) is a synthetic, extended analog of human insulin-like growth factor 1. It differs from native IGF-1 by an arginine at position 3 and an additional extension of 13 amino acids at the N-terminus, for a total of 83 amino acids. IGF-1 LR3 is sold by MyPeptidesLab strictly for in vitro research and is not approved by the EMA, FDA or any national medicines authority.
What is IGF-1 LR3 being researched for?
In laboratory and in vitro research, IGF-1 LR3 is used as a growth factor in stem cell research and cell culture applications. The Arg³ modification reduces binding to IGF-binding proteins, which is why in research the analog shows a longer duration of action than native IGF-1. Research findings are preliminary and require further validation.
What does the Certificate of Analysis (CoA) for IGF-1 LR3 contain?
The batch-specific CoA for IGF-1 LR3 shows an HPLC purity of 99% or higher, identity confirmation via mass spectrometry, the batch number and the net peptide content in milligrams per vial. The CoA is published on the product page, so you can review it before ordering.
How do you verify the purity of peptides?
Every batch is HPLC-tested by an independent external laboratory to a purity of 99% or higher, with identity confirmation via mass spectrometry. The batch-specific Certificate of Analysis is published on every product page.
How quickly is my order delivered and which carriers do you use?
Orders placed before 15:00 CET are shipped the same working day from the Netherlands via PostNL, including on Saturdays. Delivery within the EU typically takes 2-5 working days, fully tracked. Every package is shipped in neutral, unbranded packaging with no visible references to peptides.
Does MyPeptidesLab offer bulk or wholesale orders for peptides?
Yes, we supply bulk and wholesale quantities to verified research facilities. For inquiries, you can email support@mypeptideslab.com with your specifications.




