IGF-1 LR3 is a long-acting analog of insulin-like growth factor 1 typically dosed daily or post-workout. Enter your vial size, the bacteriostatic water you'll add, and your target dose — the visual syringe below shows exactly where to pull the plunger.
Common vial size for IGF-1 LR3 is 1 mg (1,000 mcg).
= 0.1 mg | Typical range 50–150 mcg (0.05–0.15 mg) per injection.
1 mg = 1,000 mcg (micrograms). Most peptide protocols are written in mcg.
IGF-1 LR3 (Insulin-like Growth Factor-1 Long R3) is an 83 amino acid analog with an arginine substitution at position 3 and a 13 amino acid N-terminal extension. This modification extends its half-life to roughly 20–30 hours and reduces binding to IGF-binding proteins, increasing bioavailability. Research protocols commonly use 50–150 mcg daily, injected subcutaneously or intramuscularly, often post-workout to capitalize on nutrient partitioning.
Standard cycle length is 4–6 weeks on followed by an equal-length off period to restore natural IGF-1 sensitivity. Always start at the lower end of the range and assess tolerance.
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View IGF-1 LR3 at Branch Peptides →Every step below uses the numbers you entered above.
Swab the rubber tops of the 1 mg IGF-1 LR3 vial and the bacteriostatic water vial with fresh alcohol pads. Let them air-dry for a few seconds.
Pull 1 mL of bacteriostatic water into a reconstitution syringe (usually a 3 mL syringe with a 21g needle).
Inject the water against the inside wall of the vial — don't blast it directly onto the powder. This protects the peptide from shear damage.
Gently swirl until the powder is fully dissolved and the liquid is clear. Never shake — foaming denatures the peptide.
On your 100-unit (1 mL) insulin syringe, pull the plunger back until the rubber tip lines up with 10 — that's your 100 mcg dose. Tap out any air bubbles, then inject as directed.
Cap the vial and store at 2–8 °C (36–46 °F). Most reconstituted peptides remain stable for 3–4 weeks refrigerated.
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