How to verify IGF-1 LR3 is authentic

Step-by-step guide to verifying your IGF-1 LR3 is genuine: checking the COA, matching the batch number, and downloading from the product page.

Step 1: Locate the batch number

Every Peptify IGF-1 LR3 vial has a batch (lot) number printed on the label. Note this number down — it should match the Certificate of Analysis published on the product page for that specific batch.

Step 2: Download the COA from the product page

The batch-specific COA for your IGF-1 LR3 is downloadable directly from the product page on peptifyuk.com. This is the most reliable verification method because the document is hosted under our control, tied to the batch number, and includes the original HPLC chromatogram image plus mass spectrometry data.

If a supplier does not publish batch-specific COAs or only provides a generic purity claim, that is a significant red flag.

Step 3: Check the HPLC peak

On the COA, look at the HPLC chromatogram. A genuine IGF-1 LR3 sample should show a single dominant peak at the expected retention time, with purity >99% (peak area). The mass spectrometry section should confirm the molecular weight matches the theoretical mass of IGF-1 LR3.

Any chromatogram with multiple large peaks, or where the purity percentage looks inconsistent with the visible peak, should prompt you to contact the supplier for clarification.

Buy IGF-1 LR3 for research

99%+ HPLC-verified IGF-1 LR3 in stock. Every vial ships from the UK with a batch-specific Certificate of Analysis. Same-day dispatch on orders before 1pm.

IGF 1LR3 1MG

Frequently asked questions

What is IGF-1 LR3?

IGF-1 LR3 is a modified version of IGF-1 with a 13-amino acid extension that prevents binding to IGF-binding proteins, resulting in enhanced bioactivity and a longer half-life.

What is IGF-1 LR3 researched for?

Published preclinical research has examined IGF-1 LR3 in cell-proliferation, myocyte-pathway, and PI3K/Akt signalling studies. The extended half-life makes it useful in protocols requiring sustained in-vitro receptor engagement.

What purity does Peptify supply?

Peptify IGF-1 LR3 is 99%+ HPLC-verified, with a batch-specific Janoshik Analytical Certificate of Analysis downloadable from the product page.