IGF-1 LR3
LIMITED EVIDENCEAlso known as: Long R3 IGF-1
Investigational — not approved for human use
Educational Overview
A modified insulin-like growth factor analogue with reduced binding-protein affinity, used widely as a cell-culture supplement in laboratory research.
Research Mechanism
Signals through IGF-1 receptors affecting cell proliferation and differentiation in culture. Its proliferative activity is precisely why human use is not supported.
Areas of Study
- Cell culture research
- Growth-factor signalling (in vitro)
Safety Considerations
Human safety is not established. Growth-factor signalling carries theoretical proliferative risk. Prohibited in competitive sport. Research material only.
Frequently Asked Questions
Is this approved for human use?
No. This material is supplied for laboratory research use only by qualified businesses and institutions. It is not a medicine and is not for human or veterinary consumption.
Do you provide purity documentation?
Certificates of analysis are available to approved accounts. Contact our team for batch-specific documentation.
References
References pending editorial review
We publish citations only after a qualified reviewer has verified them against the primary literature. We do not list references we have not checked. (1 queued.)
Last reviewed: 2026-07-23 · Status: in_review · References verified by editorial review before publication.
Disclaimer: Educational only. Not medical advice, diagnosis, or treatment. For research and educational purposes. Consult a licensed medical professional.