IGF-1 LR3 1 mg (Insulin-Like Growth Factor-1 Long R3) — Premium Research Peptide | Royal Peptides
IGF-1 LR3 1 mg is a high-purity, recombinant peptide engineered for research into cell growth, muscle hypertrophy, repair, and regeneration.
This modified analog of human Insulin-Like Growth Factor-1 is designed with an extended biological half-life of 20–30 hours, giving researchers more consistent results across a wider experimental window.
At Royal Peptides, our IGF-1 LR3 is 3rd-party tested, cGMP-produced, and lyophilized for maximum stability. Each vial is precisely dosed at 1 mg, ensuring accuracy, traceability, and quality trusted by top research institutions.
Research Highlights
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Supports Cellular Regeneration: Promotes muscle cell proliferation and repair, enhancing tissue recovery in experimental settings.
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Extended Potency: Modified with Arg3 and an N-terminal extension to resist IGF-binding proteins, extending biological activity.
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Anabolic Signaling: Commonly studied alongside CJC-1295, Ipamorelin, or GH fragments for synergistic growth signaling.
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Neuroprotective Potential: Ongoing studies explore cognitive and neuronal repair properties through improved IGF pathway activation.
⚗️ Product Specifications
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Compound: IGF-1 LR3 (Long R3 Insulin-Like Growth Factor 1)
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Quantity: 1 mg per vial
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Purity: ≥ 99% (HPLC-verified)
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Form: Sterile lyophilized powder
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Appearance: White crystalline powder
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Storage: –20 °C for long-term stability
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Solubility: Reconstitute in bacteriostatic water (for research use only)
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Origin: U.S.-based facility | Same-day shipping from Royal Peptides
Quality Assurance
All Royal Peptides compounds undergo third-party laboratory analysis verifying purity, molecular mass, and identity.
Each batch is traceable via lot number and COA, available to research clients upon request.
Our facilities adhere to cGMP and ISO-compliant manufacturing standards to ensure safety, consistency, and reproducibility in every vial.
Research Applications (For Laboratory Use Only)
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Cellular growth & differentiation studies
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Anabolic and metabolic pathway analysis
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Muscle recovery & regeneration assays
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Neural and tissue repair models
Note: IGF-1 LR3 is strictly intended for scientific and laboratory research only. Not for human consumption or medical use.
Related Research Compounds
Researchers exploring IGF pathways also examine:
CJC-1295 + Ipamorelin, Tesamorelin, KLOW Blend (GHK-Cu + BPC-157 + TB-500 + KPV), SS-31, NAD⁺, GLOW, and Retatrutide — all available through Royal Peptides, verified, and shipped from U.S. inventory.
❓ Frequently Asked Questions (FAQ)
Q1: What is IGF-1 LR3?
A: IGF-1 LR3 is a synthetic analog of human Insulin-Like Growth Factor-1, modified to resist degradation by binding proteins. This increases its stability and allows longer biological activity in research environments.
Q2: What makes the LR3 version unique?
A: The “Long R3” form includes an amino-acid extension and substitution that make it approximately 2–3 times more potent and extend its half-life up to 30 hours, ideal for extended cell studies.
Q3: How should IGF-1 LR3 be stored?
A: Store lyophilized vials at –20 °C in a dark, dry environment. Once reconstituted (for research purposes), keep refrigerated and use within a short timeframe per lab protocol.
Q4: Is this product safe for human use?
A: No. All Royal Peptides products are sold strictly for laboratory research purposes only. They are not approved for human consumption or medical use.
Q5: How is purity verified?
A: Each batch undergoes HPLC and mass-spectrometry analysis at independent laboratories. Certificates of Analysis (COAs) are available to all verified research clients.
Q6: Where does Royal Peptides ship from?
A: All products ship from U.S.-based facilities for fast domestic delivery. Orders placed before 2 PM EST typically ship the same day.
Q7: Can IGF-1 LR3 be combined with other peptides in research?
A: Yes. It’s often paired with CJC-1295, Ipamorelin, or GH fragments for synergistic pathways in anabolic and recovery studies.
⚠️ Disclaimer
This material is intended for qualified research professionals only. Not for human or veterinary use.
By purchasing this product, you agree to comply with all applicable research and safety regulations.
Storage Instructions:
- Store the lyophilized peptide at ≤ 4°C.
- For long-term storage, freezing at -20°C is recommended.
- Once reconstituted with bacteriostatic water, use promptly or store refrigerated.
Research Use Only. This product is not intended for human or animal use.
⚗️ Product Specifications
-
Compound: IGF-1 LR3 (Long R3 Insulin-Like Growth Factor 1)
-
Quantity: 1 mg per vial
-
Purity: ≥ 99% (HPLC-verified)
-
Form: Sterile lyophilized powder
-
Appearance: White crystalline powder
-
Storage: –20 °C for long-term stability
-
Solubility: Reconstitute in bacteriostatic water (for research use only)
-
Origin: U.S.-based facility | Same-day shipping from Royal Peptides
❓ Frequently Asked Questions (FAQ)
Q1: What is IGF-1 LR3?
A: IGF-1 LR3 is a synthetic analog of human Insulin-Like Growth Factor-1, modified to resist degradation by binding proteins. This increases its stability and allows longer biological activity in research environments.
Q2: What makes the LR3 version unique?
A: The “Long R3” form includes an amino-acid extension and substitution that make it approximately 2–3 times more potent and extend its half-life up to 30 hours, ideal for extended cell studies.
Q3: How should IGF-1 LR3 be stored?
A: Store lyophilized vials at –20 °C in a dark, dry environment. Once reconstituted (for research purposes), keep refrigerated and use within a short timeframe per lab protocol.
Q4: Is this product safe for human use?
A: No. All Royal Peptides products are sold strictly for laboratory research purposes only. They are not approved for human consumption or medical use.
Q5: How is purity verified?
A: Each batch undergoes HPLC and mass-spectrometry analysis at independent laboratories. Certificates of Analysis (COAs) are available to all verified research clients.
Q6: Where does Royal Peptides ship from?
A: All products ship from U.S.-based facilities for fast domestic delivery. Orders placed before 2 PM EST typically ship the same day.
Q7: Can IGF-1 LR3 be combined with other peptides in research?
A: Yes. It’s often paired with CJC-1295, Ipamorelin, or GH fragments for synergistic pathways in anabolic and recovery studies.



