Is IGF-1 LR3 the same as IGF-1?

No — LR3 is an engineered long-acting analogue. Native IGF-1 has a much shorter half-life.

IGF-1 LR3 Calculator

Also known as: Long R3 IGF-1

GHS

Default: 1mg / 1mL / 0.05mgAdjust inputs to match your vial

About

What is IGF-1 LR3?

IGF-1 LR3 is a 83-amino-acid analogue of insulin-like growth factor 1 with an extended N-terminus and Arg3 substitution that gives it a longer half-life and weaker binding to IGF-binding proteins. Used in research and bodybuilding contexts; safety profile in humans is poorly characterized.

Common vial sizes

1 mg	lyophilized powder
5 mg	lyophilized powder

Reference dose ranges

0.02 mg	≈ 2 U-100 units (at 1mg / 1mL)
0.05 mg	≈ 5 U-100 units (at 1mg / 1mL)
0.1 mg	≈ 10 U-100 units (at 1mg / 1mL)

Reconstitution

How it's typically prepared

Reconstitute with BAC water; refrigerate. IGF-1 LR3 is potent — start low.

FAQ

Frequently asked questions

Is IGF-1 LR3 the same as IGF-1?: No — LR3 is an engineered long-acting analogue. Native IGF-1 has a much shorter half-life.

Sources

References

PubMed search: IGF-1 LR3

Other GHS peptides

Notice

PeptideDose is an educational reference. It is not medical advice and does not replace consultation with a licensed healthcare provider. Doses shown in presets are derived from published protocols and product labels — they are not personal recommendations.