IGF-1 LR3
Long R3 Insulin-like Growth Factor 1
An engineered analog of insulin-like growth factor 1 (IGF-1) with a 13-amino-acid N-terminal extension (the 'Long R3' modification) and an Arg-for-Glu substitution at position 3 that reduces affinity for IGF-binding proteins, studied in muscle-biology and metabolic research as a tool for isolating IGF-1-receptor signaling from its usual binding-protein regulation.
What researchers are studying IGF-1 LR3 for.
IGF-1 Receptor Signaling
Muscle-Biology Research
Metabolic Research
83-amino-acid engineered IGF-1 analog — full sequence via certificate of analysis
Concentration and unit math, worked out.
Worked example for a 1mg vial reconstituted with 3mL of bacteriostatic water, drawn on a U-100 insulin syringe. Use the calculator below for any other vial size or water volume.
| UNITS DRAWN | VOLUME | DELIVERS |
|---|---|---|
| 5 units | 0.05 mL | 17 mcg |
| 10 units | 0.10 mL | 33 mcg |
| 20 units | 0.20 mL | 67 mcg |
| 30 units | 0.30 mL | 100 mcg |
| 50 units | 0.50 mL | 167 mcg |
Run your own numbers.
Pre-filled with a 30-day starting point — one vial, dosed once daily for 30 days. Adjust any field to match your own protocol.
RESULTS
Educational reference tool only — not medical advice. Reconstitution and dosing decisions for any research protocol should be reviewed with a qualified professional. Figures assume uniform mixing and standard syringe calibration; always verify against your own protocol.