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Common Impurities in IGF-1 LR3 Preparations Understanding the types of impurities that can be present helps researchers interpret purity data intelligently: The Disulfide Isomer Problem For IGF-1 LR3 specifically, disulfide isomers deserve special attention
All authors provided critical feedback and helped shape the research and analysis
This is especially important for people at risk for multiple deficiencies, including those with GI conditions, a history of gastric bypass surgery, impaired kidney function, older adults, and people taking PPIs
The 2OH/4OH and 2OH/16OH ratios allow a provider to assess whether their patient has a 2-OH (preferred), 4-OH (potentially damaging and carcinogenic), and/or 16-OH-E1 (proliferative) preference
