OFFICIAL IRON PEPTIDES™ STOREFree shipping on US orders over $300OFFICIAL · AUTHENTIC · SINCE 2024Lab-tested 99%+ purity100% Made in the USAOFFICIAL IRON PEPTIDES™ STOREDiscreet packagingOFFICIAL · AUTHENTIC · SINCE 2024Fast 2–5 day US shipping
OFFICIAL IRON PEPTIDES™ STOREFree shipping on US orders over $300OFFICIAL · AUTHENTIC · SINCE 2024Lab-tested 99%+ purity100% Made in the USAOFFICIAL IRON PEPTIDES™ STOREDiscreet packagingOFFICIAL · AUTHENTIC · SINCE 2024Fast 2–5 day US shipping

IGF-1 LR3 1MG

Sold and shipped exclusively by Iron Peptides — the official US manufacturer. Lab-verified ≥99% purity, COA included with every Iron Peptides order.

$89.99

Shipping  Calculated at checkout.

Availability: 100 in stock

- +
Buy 1 - 2 pieces
$89.99
Total:
$89.99
3% off
Buy 3 - 4 and save 3%
$89.99
$87.29
Total:
5% off
Buy 5 - 9 and save 5%
$89.99
$85.49
Total:
10% off
Buy 10+ and save 10%
$89.99
$80.99
Total:
Low Stock | Order now

FREE SHIPPING

99%+ PURITY

MADE IN USA

IRON Peptides

Iron Peptides IGF-1 LR3 1MG is manufactured in the United States in our FDA-registered, cGMP-compliant facility and tested by an independent third-party lab to confirm ≥99% purity. Each vial of Iron Peptides IGF-1 LR3 1MG is sealed under research-grade conditions and ships with its lot-matched Certificate of Analysis, so every order from Iron Peptides arrives ready for reproducible in-vitro work.

what is this iron peptides product

What is IGF-1 LR3 1MG?

IGF-1 LR3 (Insulin-like Growth Factor-1 Long Arginine 3) is a recombinant analogue of human IGF-1, modified to enhance stability and bioavailability. It differs from native IGF-1 by substitution of an arginine for glutamic acid at position 3 and the addition of 13 amino acids to the N-terminus. These changes reduce binding to IGF-binding proteins, extending its half-life and enabling prolonged biological activity. IGF-1 LR3 functions as a potent growth-factor agonist, influencing cellular proliferation, differentiation, and repair in laboratory settings.
Structure of Chemicals iron peptides

Chemical Structure of IGF-1 LR3 1MG

  • Sequence: MFPAMPLSSL FVNGPRTLCG AELVDALQFV CGDRGFYFNK PTGYGSSSRR APQTGIVDEC CFRSCDLRRL EMYCAPLKPA KSA

  • Molecular Formula: C₄₀₀H₆₂₅N₁₁₁O₁₁₅S₉

  • Molecular Weight: ≈ 9117.5 Da

  • CAS Number: 946870-92-4
    This engineered peptide shares tertiary similarity to endogenous IGF-1 but exhibits markedly reduced affinity for serum IGF-binding proteins, resulting in a plasma persistence approximately 120 times longer than native IGF-1.

Medical iron peptides

What Are the Effects of IGF-1 LR3 1MG?

  • Cellular Proliferation: Stimulates mitogenesis and differentiation in muscle, bone, and connective tissue models; promotes cell division in hepatic, renal, neural, and epithelial systems.

  • Metabolic Regulation: Interacts with both IGF-1 and insulin receptors, enhancing glucose uptake and influencing lipid metabolism in preclinical studies.

  • Myostatin Modulation: Evidence from murine and in-vitro models suggests IGF-1 LR3 attenuates myostatin signaling, supporting muscle regeneration and protecting myoblasts from apoptosis.

  • Tissue Repair and Longevity Research: Investigated for its role in supporting tissue maintenance and repair, and in delaying cellular senescence in mammalian aging studies.

  • Glucocorticoid Interaction: Experimental data indicate potential mitigation of glucocorticoid-induced muscle wasting in research models.


Research-Use Disclaimer:

IGF-1 LR3 is supplied strictly for laboratory and research purposes only. It is not approved for human or veterinary use. All biological effects described above are derived from preclinical or in-vitro data and should not be interpreted as clinical outcomes.

Why Choose Iron Peptides for IGF-1 LR3 1MG?

Researchers order IGF-1 LR3 1MG from Iron Peptides for three simple reasons: purity, traceability, and consistency. Every batch of IGF-1 LR3 1MG released by Iron Peptides is HPLC- and MS-verified at ≥99%, every order is shipped from our US facility within one business day, and every vial carries the Iron Peptides lot number printed on its COA. That is the standard that has made Iron Peptides the trusted research source since 2024.

Add a review
IGF-1 LR3 1MG IGF-1 LR3 1MG
Rating*
0/5
* Rating is required
Your review
* Review is required
Name
* Name is required
0.0
Based on 0 reviews
5 star
0%
4 star
0%
3 star
0%
2 star
0%
1 star
0%
0 of 0 reviews

Sorry, no reviews match your current selections

Iron Peptides 5-star verified trust badge

TrustScore 4.3

Iron Peptides product vial 73mg high-purity research peptide
Edgar Guzman

2026-01-20

5-star customer rating

I have been taking glp3 for a few…

I have been taking glp3 for a few months and I've been losing about 38 close to 40 lb. I feel great. Lots of energy. I definitely recommend iron. It's to me the most trusted legit company customer service It's amazing. They always have discounts. They always have promotions so if you want to see results go with IRON that's for sure

JC

Jcoop

2026-01-16

5-star customer rating

Amazing service top-notch products

Amazing service top-notch products, I always receive my peptides within a few days of placing my order.

PV

Paola Vargas

2026-01-16

5-star customer rating

I have try peptides Reta and it’s so…

I have try peptides Reta and it’s so good helping me with better habits and eating well I feel more energy and my progress it’s easier , very focus and the guiadance on usage it’s so good any questions they are there for you . Def recommend

Customers Also Bought

IRON Peptides

Shopping Cart
IGF-1 LR3 1MG research peptide vial by Iron PeptidesIGF-1 LR3 1MG
$89.99

Availability: 100 in stock

- +
Buy 1 - 2 pieces
$89.99
Total:
$89.99
3% off
Buy 3 - 4 and save 3%
$89.99
$87.29
Total:
5% off
Buy 5 - 9 and save 5%
$89.99
$85.49
Total:
10% off
Buy 10+ and save 10%
$89.99
$80.99
Total:
Scroll to Top