IGF-1 LR3 Reconstitution & Dosage Calculator
Modified IGF-1 analog with an extended N-terminal tail and Arg-for-Glu substitution at position 3 - giving it a far longer half-life and much lower binding to IGFBPs than native IGF-1.
IGF-1 LR3 Reconstitution Calculator
Pre-filled with standard IGF-1 LR3 values. Adjust as needed.
IGF-1 LR3 Dosing Guide
Standard: 20–50mcg daily systemic. Site-specific injection near target muscle common pre/post workout. Cycles typically 4–6 weeks. Higher doses (50–100mcg) used by advanced users only.
Blood markers to track
Note: Not a peptide in the classical sense - recombinant protein variant. Standard IGF-1 assay will NOT detect LR3 (different epitope) and may show suppressed endogenous IGF-1 due to feedback. Monitor glucose - can cause hypoglycemia.
Frequently Asked Questions
What is the standard IGF-1 LR3 dose?
Standard: 20–50mcg daily systemic. Site-specific injection near target muscle common pre/post workout. Cycles typically 4–6 weeks. Higher doses (50–100mcg) used by advanced users only.
How do I reconstitute IGF-1 LR3?
Add 1mL of bacteriostatic water to a 1mg vial of IGF-1 LR3 to get a concentration of 1000 mcg/mL. This gives 50mcg per 5 units on a 100-unit insulin syringe.
What blood markers should I track while running IGF-1 LR3?
Common biomarkers tracked alongside IGF-1 LR3 protocols include IGF-1 (may read suppressed - LR3 does not cross-react on standard assay), Fasting glucose, Fasting insulin, HbA1c, ApoB. Establishing a baseline panel before starting and re-drawing labs at consistent intervals lets you measure changes against your own reference point, generic lab ranges are less informative than your personal trend over time. MyProtocolStack tracks each of these biomarkers in the context of your active IGF-1 LR3 protocol.
Last reviewed: June 2026. For education and tracking only, not medical advice. Confirm any dose with a licensed healthcare provider.
You have the dose. Now track whether it’s doing anything.
Log every IGF-1 LR3 injection alongside your IGF-1 (may read suppressed - LR3 does not cross-react on standard assay)and Fasting glucose readings. Compare draws over time in your free dashboard, so the next change you make is based on your numbers, not a guess.
Start tracking IGF-1 LR3 free →No credit card · Free forever tier