The Encyclopedia of Peptides

A to Z / Growth hormone

IGF-1 DES

Also known as DES(1-3)IGF-1, des-IGF-1.

Best known for The short-acting IGF-1 discussed for "site-specific" growth
Evidence★☆☆☆☆
Safety dataLargely unknown
Route Injectable
United StatesNot approved
AustraliaSchedule 4 + Appendix D cl.5 (insulin-like growth factors, class entry)
as at 16 September 2026

What it is

IGF-1 DES is a truncated version of IGF-1 missing the first three amino acids. It is a laboratory reagent, not approved for human use, with no human efficacy trials yet. The truncation dramatically reduces its affinity for binding proteins, making it briefly very active and short-acting, roughly the opposite design approach to IGF-1 LR3.

What the full entry covers

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Related entries

A certificate of analysis tells you what is in a vial. The evidence rating above tells you whether the compound has been shown to work in humans. Neither answers the other's question. How to read a certificate of analysis.

This page describes what is known and not known about IGF-1 DES. It is not medical advice and not a recommendation to use it.