IGF-1 LR3Research-Grade Peptide · Lab-Verified Purity
IGF-1 LR3 is a modified, longer-lasting version of insulin-like growth factor 1 — the downstream hormone that growth hormone tells your liver to produce. The "LR3" modification (added chemical extension + one amino-acid swap) makes it much less likely to be captured by the buffers that normally trap free IGF-1, so it stays active for hours instead of minutes.
Everything researchers need to know about IGF-1 LR3
Manufacturing, testing, handling, and shipping details for IGF-1 LR3. For research purposes only — not for human or animal consumption.
IGF-1 LR3 — Product Overview
IGF-1 LR3 is a modified, longer-lasting version of insulin-like growth factor 1 — the downstream hormone that growth hormone tells your liver to produce. The "LR3" modification (added chemical extension + one amino-acid swap) makes it much less likely to be captured by the buffers that normally trap free IGF-1, so it stays active for hours instead of minutes.
IGF-1 LR3 — Molecular Characteristics & Vial Specifications
ProSource Labs supplies IGF-1 LR3 in the following available vial sizes: 1mg. Each IGF-1 LR3 vial contains pure lyophilized peptide — no fillers, no bulking agents. Product SKU references: IGF-1MV.
- Long-Acting IGF-1: Modified to stay active far longer than natural IGF-1
- Muscle Growth: Central research tool for muscle-protein-synthesis studies
- Binding-Protein Resistant: Skips the buffers that normally trap free IGF-1
- Direct Downstream: What GH ultimately signals your body to produce
Batches are characterized by ESI mass spectrometry to confirm molecular weight against the theoretical value, with amino-acid sequence confirmation on selected QA lots. Peptide content assay distinguishes net peptide mass from residual counter-ion salt.
IGF-1 LR3 — Laboratory Handling & Storage
Lyophilized IGF-1 LR3 vials should be stored at -20°C (or colder) in a laboratory freezer, inside the sealed factory container. Minimize warm-up cycles — move only the specific vial needed for a given experiment out of frozen storage at a time.
All laboratory handling of IGF-1 LR3 should follow the receiving institution's SOPs and applicable peer-reviewed protocols relevant to the researcher's specific experimental question. ProSource Labs does not publish end-user preparation or usage instructions.
IGF-1 LR3 — Third-Party Analytical Testing
Every batch of IGF-1 LR3 released by ProSource Labs undergoes independent reverse-phase High Performance Liquid Chromatography (HPLC) — the industry-standard analytical method for this class of research compound. Target chromatographic purity is typically ≥ 99%.
Additional characterization may include ESI mass spectrometry for molecular weight confirmation, Karl Fischer titration for residual moisture, and appearance/solubility inspection. A batch-specific Certificate of Analysis (COA) is available on request through customer support after purchase.
IGF-1 LR3 — Quality Assurance Process
Each production lot of IGF-1 LR3 is quarantined pending analytical release, tested against documented purity, identity, and moisture acceptance criteria, and only released to sellable inventory after passing every QA checkpoint. Batches that fail any single criterion are quarantined and never reach customer-facing inventory.
If a vial of IGF-1 LR3 you received from ProSource Labs ever fails your own institution's incoming QA testing, contact customer support at support@prosourcelabs.org — we retain samples of every batch for cross-verification.
IGF-1 LR3 — Typical Research Application
Widely used in studies on muscle protein synthesis, cell growth, tissue repair, and the IGF-1 axis. Considered the "downstream ending" of the growth-hormone-releaser story.
IGF-1 LR3 — Packaging & Fast Southern California Shipping
IGF-1 LR3 vials ship in tamper-evident, moisture-resistant, cold-chain-friendly outer packaging from our Southern California distribution facility for fast US domestic delivery — typically 2-4 business days coast-to-coast, with expedited options available at checkout.
Every IGF-1 LR3 shipment is discreet — the outer packaging carries no product-specific branding or direct reference to the compound name inside, protecting researcher privacy. Tracking numbers are emailed automatically. For institutional or high-volume orders, dedicated wholesale pricing is available through the wholesale portal.
Our full FAQ covers ordering, wholesale, lab-verification, and customer support topics.
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About IGF-1 LR3
What is IGF-1 LR3?
IGF-1 LR3 is a modified, longer-lasting version of insulin-like growth factor 1 — the downstream hormone that growth hormone tells your liver to produce. The "LR3" modification (added chemical extension + one amino-acid swap) makes it much less likely to be captured by the buffers that normally trap free IGF-1, so it stays active for hours instead of minutes.
What is IGF-1 LR3 used for in research?
Widely used in studies on muscle protein synthesis, cell growth, tissue repair, and the IGF-1 axis. Considered the "downstream ending" of the growth-hormone-releaser story.
How is IGF-1 LR3 verified?
Every IGF-1 LR3 vial ships with a batch identifier for full traceability back to its manufacturing lot, an HPLC purity report, and Certificate of Analysis (COA).
How should IGF-1 LR3 be stored?
Lyophilized IGF-1 LR3 is best stored refrigerated (2–8°C) or frozen (-20°C) for long-term stability. Once reconstituted, keep refrigerated and refer to peptide handling best practices.
Where does IGF-1 LR3 ship from?
All IGF-1 LR3 orders ship from ProSource Labs' Southern California facility with tracked domestic delivery.
Is IGF-1 LR3 intended for human use?
No. IGF-1 LR3 is supplied strictly for laboratory research applications and is not intended for and not approved for human or veterinary consumption.