Recovery & Repair
IGF-1 LR3
Long R3 IGF-1 analog
Quality assurance
Documented, not promised.
Every batch is tested by an independent laboratory and released with a public certificate of analysis. Every insert carries a unique verification code.
- COA & HPLC verified for every batch
- Independent third-party laboratory testing
- For laboratory and research use only
Overview
IGF-1 LR3 — Long R3 IGF-1 analog
What is IGF-1 LR3?
IGF-1 LR3 (Long R3 IGF-1) is an 83-residue engineered analog of insulin-like growth factor 1. An arginine substitution at position 3 and a 13-residue N-terminal extension sharply reduce binding to IGF-binding proteins — the design that gives LR3 its extended activity and made it a standard tool in cell-culture and cellular-signalling research.
Why researchers choose it
Native IGF-1 disappears from a system in minutes; LR3's long-acting profile holds working concentrations steady across the windows real protocols need. And because it is potent and used at low concentrations, small identity or purity errors are amplified — the data behind each vial matters more here than for almost any other peptide. Supplied lyophilized in 100 mcg and 1 mg vials.
The REPRIME standard
Every batch is independently HPLC-tested and released at ≥99% main-peak purity, with the COA public before purchase — including the identity confirmation that distinguishes true LR3 from native IGF-1. Cold-chain delivery, tamper-evident packaging, and a unique REP-XXXX-XXXX-X first-scan code on every vial. For laboratory and research use only.
Storage
Store lyophilized at -20°C. After reconstitution, refrigerate at 2-8°C.
Research use only
For laboratory and research use only. Not for human or animal consumption.
Documents
Lab reports for this batch.
Documents will appear here once the lab reports are uploaded.
FAQ
Frequently asked questions.
How does IGF-1 LR3 differ from native IGF-1?+
IGF-1 LR3 (Long R3) carries an arginine substitution and an N-terminal extension that reduce IGF-binding-protein binding, giving it a longer-acting profile used in cell-culture research.
What strength and purity is REPRIME's IGF-1 LR3?+
Lyophilized 100 mcg and 1 mg vials, HPLC-verified at ≥99% purity, each with a batch-specific COA on the product page.
How do I verify the product is authentic?+
Each vial's insert carries a unique code in the format REP-XXXX-XXXX-X. Enter it on the /verify page — the first scan stamps it verified; a later scan warns the code has already been used.