What is IGF-1 LR3 studied for in research?

IGF-1 LR3 is a long-acting insulin-like growth factor 1 analogue investigated in vitro for its interaction with the IGF-1 receptor and downstream growth-factor signalling pathways.

What is the difference between IGF-1 and IGF-1 LR3?

IGF-1 LR3 has the LR3 substitution that reduces binding to serum-binding proteins and extends its half-life in vitro compared to native IGF-1, making it the most common research variant.

What purity is your IGF-1 LR3?

Every 1mg vial is tested to ≥98% purity by RP-HPLC. A batch-specific Certificate of Analysis will be published as soon as the first batch lands.

How is IGF-1 LR3 reconstituted?

IGF-1 LR3 is water-soluble — reconstitute the lyophilised vial with bacteriostatic water in a sterile laboratory environment. Use our peptide calculator for target concentrations.

When will IGF-1 LR3 be in stock?

This vial is coming soon. Join the newsletter or message us on WhatsApp and we'll let you know the moment it lands.

NEW COAs JUST LANDED — 99% purity across every GLP-1 compound•Independently lab-tested by Analiza Bialek European testing•Third-party verified identity & purity — every compound, every time•The real deal. Traceable compound numbers. Downloadable certificates.•View the latest Certificates of Analysis →•NEW COAs JUST LANDED — 99% purity across every GLP-1 compound•Independently lab-tested by Analiza Bialek European testing•Third-party verified identity & purity — every compound, every time•The real deal. Traceable compound numbers. Downloadable certificates.•View the latest Certificates of Analysis →•

Coming soon IGF-LR3 1MG research peptide vial — buy IGF-LR3 1MG UK | Peptides UK 4U

Growth Hormone

IGF-LR3 1MG

Name: IGF-LR3 1MG — Research Peptide UK
Brand: Peptides UK 4U
SKU: IGF1LR31
Price: 49.99 GBP
Availability: OutOfStock

Recombinant long-acting IGF-LR3 analogue, lyophilised powder (1mg, ≥98% purity) for laboratory research into growth-factor signalling and cellular pathways.

How would you like it prepared?

Vial

You reconstitute it yourself

£49.99

Pre-filled Quick Pen (V2)

Ready-made pen, needles & dosing guide

£84.98

Pre-filled Replacement Cartridge

Refill only — you must already own a Quick Pen

£62.98

Supplied as a lyophilised vial for you to reconstitute — use our calculator for your target concentration.

Coming soon

SKU: IGF1LR31

For In Vitro Use Only — Not for Human Use

Lab-Verified Purity

View COAs

99%+

HPLC purity

Mass-Spec

Identity verified

Batch CoA

Independent lab

Every batch is independently HPLC & mass-spec tested. Certificate of Analysis is batch-numbered and matched to the vial you receive.

Verified customer WhatsApp support group

Invite-only. Your personal invite link is sent automatically with your shipping confirmation after your first order — please don't message us to request it. Reconstitution help, batch COAs and protocol guidance.

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99%+ HPLC purity

Same-day UK dispatch

UK-registered Ltd

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Overview

IGF-LR3 1MG is a synthetic, recombinant analogue of human insulin-like growth factor with the LR3 modification that extends its biological half-life and reduces binding to serum-binding proteins. Supplied as a lyophilised powder for laboratory research use only.

Research

Within laboratory settings, IGF-1 LR3 is investigated for its interaction with the IGF-1 receptor and downstream signalling pathways involved in cellular growth, proliferation, and metabolic regulation. Research applications focus on receptor-binding kinetics, peptide stability, and comparative signalling under controlled experimental conditions.

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