IGF-1 LR3: Research Summary and How to Judge a Supplier
Long-acting IGF-1 analogue with reduced binding-protein affinity. This profile sets out what is actually published, what a 1mg vial should cost, and the specific documentation to ask for before ordering IGF-1 LR3 from any research supplier.
1mg
Typical vial
$35
Lowest tracked
$50
Median price
63
Vendors listing
What IGF-1 LR3 is
IGF-1 LR3 is a modified insulin-like growth factor 1 with an arginine substitution and a 13-amino-acid N-terminal extension, which lowers its affinity for IGF binding proteins and extends its active half-life considerably.
It is a 83-residue recombinant protein rather than a synthetic peptide, so proper analysis means protein methods, and correct folding is as important as sequence purity.
What the evidence base looks like
There is a real published record behind this compound, spread across animal work and a smaller amount of human data, but not enough controlled evidence to support confident claims.
Our library records roughly 72 relevant publications for IGF-1 LR3 and grades the evidence as moderate. That grade describes the weight of research, not a judgement about safety or effect, and it is reviewed as new work is published.
Supplier quality: what to check on IGF-1 LR3
Misfolded or aggregated protein is common and cannot be detected by HPLC purity alone.
The practical checklist is the same on every product but weighted differently here: a batch-matched certificate of analysis, an identity method appropriate to this molecule rather than purity alone, clear peptide content per 1mg vial, and a supplier that will answer a technical question before taking payment.
Typical UK pricing
The lowest price we currently track for a 1mg vial is £34.95, against a market median nearer £50. Compare on price per milligram rather than per vial, because vial sizes across suppliers are rarely identical.
A listing well below the tracked low is worth investigating rather than celebrating. On this compound the cost of doing it properly is largely analytical, and that is the first thing an unusually cheap supplier stops paying for.
Frequently asked
Is IGF-1 LR3 approved for human use?
No. Everything listed here is supplied for laboratory research use only, and nothing on this page is medical advice.
How much should IGF-1 LR3 cost?
Tracked UK prices start around £34.95 for a 1mg vial, with the market median closer to £50.
What is the single most useful check on IGF-1 LR3?
Misfolded or aggregated protein is common and cannot be detected by HPLC purity alone.
Search focus for this profile
igf-1 lr3 — Tracked monthly searches, difficulty Monitored. Source: Semrush (UK database).
Supporting terms covered: igf-1 lr3 review, buy igf-1 lr3 uk, igf-1 lr3 price, best igf-1 lr3 supplier.
Everything below describes published research and market data. Nothing here is medical advice, and none of these compounds are sold or supplied by CheckALab.