IGF-1 LR3
IGF-1 LR3 (Long R3 IGF-1) is a 83-amino acid analogue of Insulin-like Growth Factor 1 with an N-terminal extension and substitution that dramatically extends.s half-life and reduces IGFBP binding — making it far more potent and longer-lasting than native IGF-1.
Potency loss over time
Estimated potency retained (%) per storage condition. Hover the chart for details.
⚠ Modelled per compound from molecular structure — chain length, cyclisation, oxidation- and deamidation-prone residues and light sensitivity. Indicative only, not lab-measured per batch.
Time in body
How much of a single dose remains over time, modelled from the terminal half-life. Illustrative — not a dosing tool.
Half-life ~20.0 h (literature estimate) · effectively cleared (~97%) after ~4 d (5 half-lives).
Research context only — not dosing guidance. · Source: Estimate; extended vs native IGF-1 (~20 h)
| # | Suppliers | Price | €/mg | Price trend (6 months) | Purity | COA | Score ⓘ | |
|---|---|---|---|---|---|---|---|---|
| 1 |
 OME
| €64.99 | €64.99/mg | ▼0.8% | 99% | ✔ Third-party | Shop → | |
| 2 |
 NEX
NEXTGEN PEPTIDES
in stock 🇳🇱 NL
| €79.95 | €79.95/mg | ▼9.6% | 99% | ✔ HPLC | Shop → | |
| 3 |
 PRI
PRIMAL PEPTIDES
in stock 🇳🇱 NL
| €89.99 | €89.99/mg | ▲8.8% | 99% | ✔ COA | Shop → | |
| 4 |
 RES
RESEARCH PEPTIDES EUROPE
in stock 🇪🇸 ES
| €89.99 | €89.99/mg | 99.8% | ✔ HPLC/LC-MS | Shop → | ||
| 5 |
 PEP
PEPTA SUPPLY
in stock 🇳🇱 NL
| €89.99 | €89.99/mg | 99% | ✔ HPLC | Shop → | ||
| 6 |
 BEY
BEYOND PEPTIDES
in stock 🇪🇺 EU
| €114.37 | €114.37/mg | 99% | ✔ HPLC | Shop → | ||
| 7 |
 24P
24PEPTIDES
in stock 🇳🇱 NL
| €119 | €119.0/mg | ▼7.1% | 99% | ✔ Liquilabs | Shop → | |
| 8 |
 ADR
ADRIA SCIENCE
in stock 🇸🇮 SI
| €132.9 | €132.9/mg | 99% | ✔ HPLC | Shop → |
Prices manually checked and updated monthly — source: publicly available supplier data. No affiliate links, no paid placement.
IGF-1 LR3
Mechanism, evidence level, EU status and COA guidance per compound. No dosages, no protocols — that belongs with a doctor.