IGF-1 LR3 is a modified form of insulin-like growth factor 1 with 13 extra amino acids and one substitution, which lowers its binding to IGF binding proteins. It is not approved for human use.
Also known as: Long R3 IGF-1.
Powder vials are usually labeled 0.1 mg (100 mcg) or 1 mg.
Here is the math for a 1 mg vial mixed with 2 mL of bacteriostatic water, drawing 50 mcg with a U-100 insulin syringe (1 mL = 100 units).
1 mg ÷ 2 mL = 500 mcg/mL50 mcg ÷ 500 mcg/mL = 0.1 mL0.1 mL × 100 = 10 units| Amount | Volume | U-100 syringe |
|---|---|---|
| 25 mcg | 0.05 mL | 5 units |
| 50 mcg | 0.1 mL | 10 units |
| 100 mcg | 0.2 mL | 20 units |
Adding more water doesn't change how much IGF-1 LR3 is in the vial. It only spreads it over more liquid, so each draw is bigger and easier to read.
| Water added | Concentration | Volume | U-100 syringe |
|---|---|---|---|
| 1 mL | 1 mg/mL | 0.05 mL | 5 units |
| 2 mL | 500 mcg/mL | 0.1 mL | 10 units |
| 3 mL | 333.3 mcg/mL | 0.15 mL | 15 units |
| 5 mL | 200 mcg/mL | 0.25 mL | 25 units |
For any other vial size or amount, the free peptide reconstitution calculator works backwards from the amount you want and suggests a water volume that lands on a clean syringe mark.
We could not find a published human half-life for this compound. Figures quoted online usually come from animal or cell studies, so we do not list one here.