IGF-1 LR31mg research peptide · Canada
Buy 2 and save $14.00 — 10% off every unit
- Ships from Vancouver — no customs, no duties
- Dispatched in 1–2 business days · tracked & insured
Add $230.01 more for free shipping
Key facts
- Compound:
- IGF-1 LR3
- Purity:
- ≥99%, verified by HPLC
- Tested by:
- independent third-party lab (HPLC purity and measured content)
- Certificate of analysis:
- available on request · members-only lab results
- Ships from:
- Vancouver, BC — typically 2–5 business days, tracked and insured, no customs
- Intended use:
- in vitro laboratory research only — not for human or veterinary consumption
Page last updated
IGF-1 LR3 is a longer-lasting, lab-made version of IGF-1, a natural growth factor the body makes. Researchers use it in cell-culture work because it stays active much longer than regular IGF-1. It comes as a freeze-dried powder in a 1 mg vial.
IGF-1 LR3 for endocrine research, shipped Canada-wide from Vancouver. One 1 mg vial, ≥99% purity. Tested by an independent lab for purity and content (HPLC), and the lab report (COA) for your batch is available on request. Tracked, insured delivery across Canada — by Canada Post Xpresspost, usually 1 to 4 business days, with no customs step and no brokerage fee.
Sold as a laboratory research material only, for in vitro use. It isn’t a medicine and isn’t meant for people or animals.
Primary literature
- Novel recombinant fusion protein analogues of insulin-like growth factor (IGF)-I indicate the relative importance of IGF-binding protein and receptor binding for enhanced biological potency — Journal of Molecular Endocrinology, 1992
Characterised the N-terminally extended “Long” IGF-I analogues and compared binding-protein and receptor binding with potency in vitro.
Cited for research context. A citation is not a claim that this compound is safe, effective, or approved for any use.
Research Use Only. This compound is a laboratory material for in vitro research. It is not a medicine and is not for human or veterinary use. If you’re looking for help with your health, please speak with a doctor or pharmacist.
New to research compounds? Start here. Buying in Canada: why domestic means no customs. Checking quality: how to read a COA.
What is IGF-1 LR3? IGF-1 LR3 at a glance
In short: IGF-1 LR3 is $69.99 CAD at Popular Peptides Canada, ships from Vancouver with no customs, and usually arrives in 1–4 business days.
- What it is
- IGF-1 LR3 is a longer-lasting, lab-made version of IGF-1, a natural growth factor the body makes. Researchers use it in cell-culture work because it stays active much longer than regular IGF-1.
- Price
- $69.99 CAD. Prices are in Canadian dollars, so there’s no exchange-rate surprise.
- Size
- 1mg
- Purity
- ≥99%, tested by an independent lab (HPLC purity and content)
- Ships from
- Vancouver, BC, to anywhere in Canada. It never crosses a border, so there’s no customs and no brokerage fee.
- Delivery
- Dispatched in 1–2 business days by Canada Post Xpresspost, tracked and insured. Usually 1–2 days in BC, 2–3 on the Prairies and to major Ontario and Québec cities, 2–4 in Atlantic Canada.
- Shipping cost
- Free over $300 CAD, otherwise a flat $20.
- Lab report
- Available on request. Lab results are kept in our members-only area.
- Pay with
- Visa, Mastercard, Apple Pay, Google Pay or Interac e-Transfer (an extra 10% off by e-Transfer).
- Sold for
- Laboratory research only. It isn’t a medicine and isn’t meant for people or animals.
New to this? Our plain-language guide explains everything from lab reports to delivery, and our Canada vs imported guide shows why ordering inside Canada is simpler.
IGF-1 LR3 — compound background
Recombinant 83-residue protein analogue of IGF-1
IGF-1 LR3 is an engineered analogue carrying two changes to native IGF-1: an arginine substitution at position 3 and a 13-residue N-terminal extension. The Arg3 substitution is the functional one — it drastically reduces binding to IGF binding proteins, which normally sequester the great majority of circulating IGF-1. The result is a molecule that stays free rather than bound.
Solubility & reconstitution
This is the one compound in this catalogue that genuinely requires an acidic solvent. IGF-1 LR3 is a folded 83-residue protein with poor solubility at neutral pH and is conventionally dissolved first in dilute acetic acid or dilute HCl, then diluted into the working buffer. Attempting to dissolve it directly in plain water or PBS commonly produces incomplete dissolution or visible precipitate — this is expected chemistry, not a defective vial.
Typically prepared as a concentrated acidic stock, then diluted; avoid dilute storage.
Storage
Sealed at -20 °C or below. As a folded protein rather than a short peptide, it has less thermal margin than most of this catalogue. Refrigerate at 2–8 °C for short-term work. Where longer storage is required, carrier protein such as 0.1% BSA is conventionally added to prevent adsorptive loss — a step that is standard for growth-factor proteins and unnecessary for short peptides.
Short: commonly worked with within 1–2 weeks at 2–8 °C, or frozen in single-use aliquots.
Stability
Treat IGF-1 LR3 as a protein, not a peptide. Everything that makes short peptides forgiving — no fold to lose, no disulfides, no aggregation propensity — is absent here.
Reading the Certificate of Analysis
For a recombinant protein the informative checks differ from peptide COAs: SDS-PAGE showing a single band at the expected size, correct mass by ESI-MS, and — most meaningfully — a bioactivity result, since a protein can be chemically pure while misfolded. Endotoxin content is also relevant for a recombinant product in a way it is not for a synthetic peptide.
Background and handling information is educational, for in-vitro laboratory research use only — not medical advice, dosing, or usage guidance, and not a description of use in humans or animals.
How much does IGF-1 LR3 cost in Canada?+
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What sizes of IGF-1 LR3 are available?+
Is IGF-1 LR3 third-party tested?+
What purity is IGF-1 LR3?+
Is IGF-1 LR3 intended for human or veterinary use?+
Do you ship IGF-1 LR3 across Canada?+
How should IGF-1 LR3 be stored?+
IGF-1 LR3 laboratory reference
IGF-1 LR3 is recombinant 83-residue protein analogue of igf-1. Handling requirements follow from that chemistry rather than from generic peptide guidance — the pages below cover each aspect specifically for this compound.
Lyophilized and reconstituted storage conditions, plus the practical working window.
Diluent selection, dissolution behaviour, and the calculator preset for this compound.
Which solvents work, why, and what abnormal dissolution behaviour indicates.
The specific chemical routes by which this molecule breaks down, and how to limit each.
Which assays are informative for this molecule, and what to actually check on its COA.
Compound-specific bench practices, and the errors most often made with this molecule.
What to inspect on arrival, and which conditions actually warrant rejecting a vial.
Questions specific to this compound — structure, chemistry, and common misconceptions.
IGF-1 LR3 compared with
Reference content is educational laboratory-handling information for in-vitro research use only — not medical advice, not usage guidance, and not a protocol.