Source comparison
IGF-1 LR3 versus IGF-1 DES
Another common IGF-1 variant, IGF-1 DES (Des 1-3), takes the opposite approach to modification. Instead of adding amino acids, DES removes the first three from the N-terminus, creating a truncated 67 amino acid peptide. This modification results in dramaticall
This comparison does not assign a generated winner or score.
- Another common IGF-1 variant, IGF-1 DES (Des 1-3), takes the opposite approach to modification. Instead of adding amino acids, DES removes the first three from the N-terminus, creating a truncated 67 amino acid peptide.
- This modification results in dramatically different properties. IGF-1 DES has an ultra-short half-life of about 20 to 30 minutes but approximately 10 times the potency at receptor sites compared to native IGF-1. It doesn't circulate systemically like LR3. Instead, it acts locally and degrades quickly.
- The practical implications are significant. IGF-1 LR3 works well for systemic, whole-body growth effects with once-daily dosing. IGF-1 DES excels at localized, site-specific applications where researchers inject it directly into target muscles immediately before training. The theory holds that high lactic acid buildup makes IGF-1 receptors more receptive, so injecting into muscles about to be trained maximizes local effects.
- For researchers interested in IGF-1 DES sourcing, understanding these differences helps select the right variant for specific research goals.
- Feature
- IGF-1 LR3
- IGF-1 DES
- Natural IGF-1
- Amino acids
- 83
- 67
- 70
- Half-life
- 20-30 hours
- 20-30 minutes
- 10-20 minutes
- Potency vs. native
- ~3x
- ~10x
- 1x
- IGFBP binding
- Very low
- Reduced
- High
- Best for
- Systemic growth
- Localized growth
- Reference only
- Injection frequency
- Once daily
- Multiple daily
- Impractical