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FRO Peptides sells research compounds strictly for laboratory and research use only. Products are not for human consumption. You must be 21 years of age or older to enter this site.

IGF-1 LR3 – Research Peptide (1mg)

High-purity IGF-1 LR3 peptide (≥98%) for cell growth, muscle-signaling, and metabolic research applications. HPLC-tested. For research use only.

$69.99

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  • IGF-1 Receptor Research: A long-acting IGF-1 analog with reduced binding to IGF-binding proteins, used in receptor studies.
  • Cell Culture Applications: Commonly used as a growth-factor supplement in cell proliferation assays.
  • Signaling Pathways: Studied for activation of PI3K/Akt and MAPK signaling in vitro.

Tested Purity

98%+

Sequence

Verified

Customer reviews

What customers say about FRO

5.0Based on 6 customer reviews
Ordering is easy, shipping is quick, and everything arrives packaged very well. I’ve been really impressed with the quality of the products and how consistent everything has been. Their customer service is also excellent and they’re always helpful and quick to respond when I have questions.
Kendra R.Retatrutide, GHK-Cu, NAD+, MOTS-C
Customer service was impeccable. When I had questions regarding different peptides Michelle had all the answers. The staff here definitely do their research to give their customers top quality care!
Afton T.FRO customer
I’ve had a great experience with FRO Peptides. The ordering process is simple, communication is great, and everything is handled professionally from start to finish. I really appreciate the attention to quality, transparency, and customer service.
Anna F.FRO customer
Product works great and fast shipping.
Danny T.Retatrutide
Have purchased many peptides from FRO. Great experience and products.
Shane W.FRO customer
Great people, great products.
Blake E.FRO customer

Description

IGF-1 LR3 – Research Peptide

IGF-1 LR3 (For Research Use Only), also known as Long Arg3 Insulin-Like Growth Factor-1 is a synthetic peptide supplied exclusively for laboratory and analytical research applications. Specifically, researchers utilize IGF-1 LR3 in controlled environments to examine peptide structure, stability characteristics, and receptor-interaction behavior under defined experimental conditions.

In laboratory research settings, this peptide supports analytical studies focused on signaling behavior, molecular interactions patterns, and compound performance during extended observation periods. Additionally, researchers evaluate IGF-1 LR3 to document interaction dynamics, response characteristics, and pathway activity in repeatable laboratory models.

Available Research Quantities

  • 0.1mg
  • 1.0mg

Intended Research Applications

Research applications may include:

  • Peptide-receptor interaction analysis
  • Molecular signaling and pathway observation
  • Cellular response modeling in laboratory environments
  • Analytical evaluation of peptide stability and activity duration
  • Pathway interaction studies under controlled conditions

 

Additional information

DO

0.1mg, 1.0mg

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On orders over $200 (US only)

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Uncompromising purity. Engineered for excellence.

Research-Grade Purity

Synthesized to ≥98% purity, rigorously verified via HPLC.

USA Synthesized

Formulated, tested, and fulfilled exclusively within the United States.

Lyophilized Stability

Vacuum-sealed and stabilized to preserve molecular integrity during transit.

Third-Party Verified

Independent lab testing by AccuMark Labs, with a published Certificate of Analysis for every listed batch.

Common Questions.

Everything you need to know about our synthesis process, laboratory verification protocols, and research utility.

Are your compounds intended for human use?

All products sold by FRO Peptides are strictly for laboratory and analytical research purposes. They are not intended for human or veterinary use, consumption, or clinical application of any kind.

Every batch ships with a corresponding Certificate of Analysis (CoA) documenting purity, compound identity, and testing parameters. CoA documentation is available upon request for any order, and every published certificate is in our COA Library.

Each compound is sourced through a controlled supply chain and undergoes internal quality verification before fulfillment. We maintain batch-level traceability from sourcing through final packaging to ensure consistency across every order.

Yes. Volume discount codes are available for qualifying orders. Researchers ordering at scale can reference our discount structure at checkout — no separate application required.

Orders ship from our California fulfillment center by FedEx 2-Day at a $9.95 flat rate, and usually arrive about 2 business days after they ship. Compounds are packaged to maintain integrity during transit. Orders over $200 qualify for free shipping (US only).

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The standard for research integrity.

Premium research-grade peptides engineered for precision and molecular stability. Purity verified by independent HPLC testing.