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FOR RESEARCH USE ONLY. This compound is not FDA approved. All data presented is from clinical trials for educational reference.

IGF-1 LR3
8x tested · ISO 1702599%+ purity

Growth Factor Analog Peptide

IGF-1 LR3

An 83-amino acid synthetic analog of human insulin-like growth factor 1 with reduced binding protein affinity and extended half-life, studied for anabolic and tissue growth effects in preclinical research. Premium Research Peptide.

$69.99$45.49
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IGF-1 LR3$69.99$45.49

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40% off from 10 units per product, 50% off from 50 + free 2-day signed delivery.

Verified Test Results

Every batch, independently verified.

Each batch is analyzed by an ISO/IEC 17025 accredited third-party laboratory before it ships. This is the released report for the current batch, exactly as the lab signed it.

ILSILS LaboratoriesIndependent, ISO/IEC 17025 accredited

Certificate of Analysis

99.03%

Purity by HPLC

Lot
IGF0002
Tested
Jul 30, 2026
Labeled
1mg
Measured
1.03mg
ISO 17025 Accredited8× Tested
View signed certificate (PDF)

Full QC panel

6 passed · 2 reported

Appearance

Visual

GoodPass

Purity

HPLC · spec ≥ 95%

99.03%Pass

Net Peptide Content

HPLC

1.03mgReported

Identity

HPLC

ConfirmedPass

Fentanyl Screen

Immunoassay

Not DetectedPass

Heavy Metals

ICP-MS

Not DetectedPass

Sterility

PCR

No GrowthPass

Endotoxin

USP <85>

0.097 EU/mLReported

Every batch on record

Open any lot's signed certificate. Your order ships with its own lot-specific report.

IGF-1 LR3 1mg

Latest

LOT IGF0002

99.03%

HPLC purity · meets spec

Labeled
1mg
Measured
1.03mg
Identity
Confirmed
Heavy metals
Not Detected
Sterility
No Growth
Endotoxin
0.097 EU/mL
Tested
Jul 30, 2026

8 assays passed · ILS Laboratories, ISO/IEC 17025 accredited

View certificate

IGF-1 LR3 1mg

LOT IGF0001

99.47%

HPLC purity · meets spec

Labeled
1mg
Measured
1.06mg
Identity
IGF-1 LR3
Heavy metals
Not Detected
Sterility
No Growth
Endotoxin
< 0.05 EU/mL
Tested
Jun 10, 2026

8 assays passed · ILS Laboratories, ISO/IEC 17025 accredited

View certificate

Technical specifications

Compound Information

Molecular Profile

What Is IGF-1 LR3?

Type
Synthetic IGF-1 analog
CAS Number
143045-27-6
Molecular Weight
9,117.60 g/mol
Amino Acids
83
Formula
C400H625N111O115S9
Sequence
MFPAMPLSSL FVNGPRTLCG...
PubChem Database
Structural Modifications

How It Differs from Native IGF-1

N-terminal extension
+13 amino acids (MFPAMPLLSLFVN)
Position 3 substitution
Glu → Arg
Total length
83 vs 70 amino acids
IGFBP affinity
Dramatically reduced
IGF-1R affinity
Retained
Mohan & Baylink, 2002

Peer-reviewed literature

The research behind this compound, cited in full.

Every research claim on this page traces back to one of the 5 publications below.

  1. 01Biochemical Journal · 1992Insulin-like growth factor-I (IGF-I) and especially IGF-I variants are anabolic in dexamethasone-treated rats
  2. 02Journal of Endocrinology · 1996Superior potency of infused IGF-I analogues which bind poorly to IGF-binding proteins is maintained when administered by injection
  3. 03Journal of Endocrinology · 2002IGF-binding proteins are multifunctional and act via IGF-dependent and -independent mechanisms
  4. 04American Journal of Pathology · 2011IGF-1 has plaque-stabilizing effects in atherosclerosis by altering vascular smooth muscle cell phenotype
  5. 05Journal of Endocrinology · 1995Long R3 insulin-like growth factor-I (IGF-I) infusion stimulates organ growth but reduces plasma IGF-I, IGF-II and IGF binding protein concentrations in the guinea pig

Important research notice

Not for human, veterinary, or food use. This product is sold exclusively for research and educational purposes. It is not intended to diagnose, treat, cure, or prevent any disease.

All clinical trial data and research findings presented on this page are sourced from peer-reviewed journals and official publications. They are provided for educational reference only and should not be interpreted as medical advice or product claims.

By purchasing this product, you confirm that you are a qualified researcher and will use it in accordance with all applicable laws and regulations.

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IGF-1 LR3 | 99%+ Pure Peptide | Amino Club | Amino Club