What purity are Bastion Peptides products?

All peptides from Bastion Peptides are independently verified at ≥99% purity by Janoshik Analytical using reverse-phase HPLC and LC-MS confirmation. Batch-specific Certificates of Analysis are available through the COA Lookup on our Resources page.

What form do Bastion Peptides products come in?

All peptides are supplied as lyophilized (freeze-dried) powder in sealed, individually labeled vials. Lyophilization extends shelf life and protects peptide integrity during shipping and storage.

Is a Certificate of Analysis available?

Yes. A batch-specific Certificate of Analysis from Janoshik Analytical is available for every Bastion Peptides product through the COA Lookup tool on the Resources page.

How should research peptides be stored?

Store lyophilized peptides at −20°C. After reconstitution with bacteriostatic water, store at 2–8°C and use within 28 days. Avoid exposure to heat, light, and repeated freeze-thaw cycles.

Growth & GH Peptides

IGF-1 LR3 | 1mg

Name: IGF-1 LR3 | 1mg | HPLC Verified ≥99% Purity | Bastion Peptides
SKU: IGF1LR3-1
Availability: InStock
Rating: 0 (1 reviews)

(1 customer review)

Price range: $45.00 through $360.00

Research-grade IGF-1 LR3 1mg. Long-acting growth factor variant. For in vitro research use only.

Pack Size

Clear

HPLC Verified ≥99% Purity

COA Included with Every Order

Ships from US — Discreet Packaging

I confirm this product is for in-vitro research purposes only and not for human consumption or therapeutic use.

SKU: IGF1LR3-1 Category: Growth & GH Peptides

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Volume Pricing

1 Vial $45.00

5 Vials $200.00($40.00/vial) Save 11%

10 Vials Best Value $360.00($36.00/vial) Save 20%

Wholesale accounts save 20–50% on all orders.

For Research Use Only — Not for human or veterinary consumption. Intended solely for in vitro laboratory research.

Third-Party Tested · Janoshik Independent Laboratories · >99% Purity

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Cold-Chain Shipping Included — Insulated packaging + ice packs on every order. Store at −20°C upon arrival.

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Overview

IGF-1 LR3 (Insulin-like Growth Factor-1 Long Arg3) is a synthetic, recombinant analogue of human IGF-1 with an N-terminal 13 amino acid extension and an Arg³ substitution that dramatically reduces IGF binding protein (IGFBP) affinity. This binding protein resistance extends the plasma half-life approximately 120-fold compared to native IGF-1, making IGF-1 LR3 an essential research tool for studying IGF receptor signaling, cellular anabolic pathways, and tissue growth mechanisms over extended time periods in preclinical models.

Structure	N-terminal 13 aa extension + Arg3 substitution on IGF-1 backbone
Molecular Weight	~9111 Da
CAS Number	946870-92-4
Purity	≥99% (HPLC verified)
Format	Lyophilized powder
Quantity	1mg per vial
Storage	-80°C recommended; -20°C acceptable for short-term

Key Research Applications

IGF-1 receptor (IGF-1R) activation and downstream signaling studies
PI3K/Akt/mTOR pathway investigation
Skeletal muscle cell hypertrophy and satellite cell activation models
Reduced IGFBP interference for long-duration experiments
Tissue growth and anabolism mechanistic research
Comparison with native IGF-1 receptor binding kinetics

Reconstitution: Add 0.5 mL of 0.1M acetic acid for initial dissolution, then dilute to target concentration with PBS or 0.1% BSA buffer. Gently swirl — do not shake. Aliquot immediately and store at -80°C. Avoid repeated freeze-thaw cycles.

Research Use Only. This product is intended strictly for in vitro laboratory research. Not for human or veterinary use. Not evaluated by the FDA.

Researcher Resources

For laboratory research purposes only. Not for human consumption. These statements have not been evaluated by the U.S. Food and Drug Administration.

Pack Size	1 Vial, 5 Vials, 10 Vials

1 review for IGF-1 LR3 | 1mg

Rated 5 out of 5
Cellular Growth Research Lab – April 30, 2026
IGF-1 LR3 arrived in excellent condition. Purity confirmed by our lab. Potent and reliable for our in vitro proliferation assays.

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Reconstitution Calculator

Calculate exactly how much bacteriostatic water to add for your target concentration.

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Shelf Life (reconstituted) 28 days @ 4°C

For research purposes only. Always verify concentrations independently.

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Bacteriostatic Water 10ml $8.00 Required for peptide reconstitution

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Frequently Asked Questions

What purity level is this peptide?+

All Bastion Peptides products are >99% purity (HPLC verified). IGF-1 LR3 is >98%. Certificate of Analysis available on the Resources page for every batch.

How do I reconstitute this peptide?+

Add bacteriostatic water slowly along the vial wall — do not shake. Gently swirl until dissolved. Standard dilution: 1ml bac water per 5mg peptide. Store reconstituted peptide at 4°C and use within 28 days.

What are the storage requirements?+

Store lyophilized (freeze-dried) peptides at −20°C. Once reconstituted, store at 4°C and use within 28 days. Avoid repeated freeze-thaw cycles and light exposure.

Is this product for human use?+

No. All products are strictly for in vitro laboratory research only. Not intended for human or veterinary use, consumption, or any therapeutic application.

How is cold-chain shipping handled?+

All orders ship with insulated packaging and ice packs included. US standard shipping is 3–5 business days. Expedited options available at checkout.

Do you provide a Certificate of Analysis?+

Yes. COA documents for every batch are available on the Resources page. Contact support to request a specific batch COA.

Certificate of Analysis

COA Available on Request

Janoshik Independent Lab

Lot-Specific Testing

All Bastion Peptides products are submitted to Janoshik Independent Laboratories for third-party purity, identity, and potency verification. Certificates of Analysis are available for every product lot.

Request COA by Email Janoshik Lab Website

IGF-1 LR3 | 1mg