Fact-Checked·Verified against peer-reviewed sources · Last updated Oct 18, 2026·For research use only - not for human consumption
Growth HormoneActive Research

IGF-1 LR3

Also known as: igf1 lr3 · igf-1 lr3 · long r3 igf-1 · long r3 igf1 · insulin-like growth factor 1 lr3 · long R3 IGF-1 · insulin-like growth factor LR3 · IGF-1 long arginine 3 · Long R3 IGF-1 · Long-Acting IGF-1

For in-vitro (laboratory) research purposes only. Not for human or animal consumption.

Available Forms

Injectable

Research Applications

Muscle GrowthTissue & Wound HealingHormonal Balance

Check independent lab results, free

Finnrick Analytics publishes independent lab test results for peptide products from named vendors, and anyone can check the published results for free.

For in-vitro research use only. Not for human consumption.

1What Is IGF-1 LR3?

Long-acting variant of IGF-1 studied for anabolic signaling, muscle hypertrophy, and satellite cell activation.

4Published Research - Plain English Summaries

The studies below have been published in peer-reviewed journals. Summaries are written in plain language - no jargon. Citations are provided as text only.

animal study

Yavuz E, Sağır MS, Ercan A, Erginer M, Barlas FB, Sakarya D, Kılıç Ş, Ölçeroğlu B, Yardibi H, Kalaycılar İB, Demiröz A · 2025 · International journal of biological macromolecules · PMID 41015370

animal study

White A, Stremming J, Wesolowski SR, Al-Juboori SI, Dobrinskikh E, Limesand SW, Brown LD, Rozance PJ · 2025 · American journal of physiology. Endocrinology and metabolism · PMID 39679943

in vitro study

White A, Stremming J, Brown LD, Rozance PJ · 2023 · Journal of developmental origins of health and disease · PMID 37114757

other

Lu Z, Liu N, Huang H, Wang Y, Tu T, Qin X, Wang X, Zhang J, Su X, Tian J, Bai Y, Luo H · 2023 · Applied microbiology and biotechnology · PMID 37261455

animal study

Jonker SS, Giraud GD, Chang EI, Elman MR, Louey S · 2020 · FASEB journal : official publication of the Federation of American Societies for Experimental Biology · PMID 32573852

Buy IGF-1 LR3 - Verified Vendors(16 vendors)

The vendors below are affiliate partners of Peptide Stores Online. Each listing links to the vendor's own website, where ordering, payment, and delivery are handled by the vendor.
Alera Research1 listing

IGF-1 LR3 0.1mg

Ares Research2 listings

IGF-1 LR3 0.1 mg

IGF-1 LR3 1 mg

Peptuvia1 listing

IGF-1 LR3 · 0.1mg, 1mg

LabFirst Peptides2 listings

IGF-1 LR3 0.1mg

IGF-1 LR3 1mg

Offline Peptides1 listing

IGF-1LR3 1mg

Vertex Labs1 listing

IGF-1 LR3 1mg

AminoVault1 listing

IGF-1 LR3 1 mg

V8 Peptides1 listing

IGF-1 LR3 1 mg

GenX Peptides1 listing

IGF-1 LR3 (Receptor Grade) 1mg

American Peptides1 listing

IGF-1 LR3 · 1mg

Alpha Pro Peptides1 listing

IGF-1 LR3 (1000mcg)

Giga Compounds1 listing

IGF-1 LR3 1mg

DelixLabs1 listing

IGF-1 LR3 1 mg

MsAmino1 listing

IGF-1 LR3 (1mg) · 1mg

Neuro Labs1 listing

IGF-1 LR3 1MG

Sparta Labs1 listing

IGF-1 LR3

Related Compounds

All content on this page is for in-vitro research purposes only. Not intended for human or animal use. Consult a licensed professional before handling research chemicals. No content on this page constitutes medical advice or a treatment recommendation.

← Back to Peptide Library

All products listed on Peptide Stores Online are for in-vitro laboratory and educational research purposes only. Not for human or animal consumption. Not evaluated by the Food and Drug Administration. Not intended to diagnose, treat, cure, or prevent any disease or condition. All sellers and buyers agree to full research-use-only terms at account creation. Peptide Stores Online assumes no liability for misuse of any product listed on this platform.