Cheapest IGF-1 LR3 Prices UK

About IGF-1 LR3

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 moves the IGF-1 LR3 price

Three things move the IGF-1 LR3 price you see in the table above: how much active material a 1mg vial actually contains once excipients and salt content are accounted for, whether the supplier funds independent analysis on every batch rather than once a year, and how the vial is packed and shipped. Misfolded or aggregated protein is common and cannot be detected by HPLC purity alone. Compare price per milligram rather than price per vial, and discount any listing whose certificate is undated, unsigned, or tied to a different batch number than the one on the label.

How we independently rank every supplier

Every supplier in this table is scored independently, and no vendor can pay to appear, move up, or have a poor result removed. We build a score out of ten from four weighted inputs: published third-party analytical documentation and how completely it covers the catalogue, identity verification of the company behind the website, the volume and consistency of moderated customer reviews collected through CheckALab, and operational signals such as dispatch reliability, stock accuracy and complaint handling.

For IGF-1 LR3 specifically we weight the documentation input according to how the compound fails: misfolded or aggregated protein is common and cannot be detected by HPLC purity alone. Suppliers publishing analysis that addresses that point score higher than suppliers publishing a headline purity figure alone. Reviews only count once they clear moderation, and no single review can move a score, so a burst of unusually positive or negative feedback cannot reposition a supplier. Scores are recalculated as new certificates, reviews and delivery data arrive.

How to buy IGF-1 LR3 cheaply without cutting corners

The lowest headline price is rarely the best value. Compare price per mg rather than price per vial, check whether a batch-matched certificate of analysis is published, and factor in delivery. A cheap vial with no third-party testing behind it is not a saving.

Kensington Labs currently sits at the top of this table at £35 for a 1mg vial, and holds a CheckALab score of 9.43/10.