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But with more impurities comes a greater risk of immunogenicity, when the bodys immune system reacts to a substance as though it were a threat.30 Its like an allergic reaction, and just like an allergic reaction, the outcome can be fatal.31 Meanwhile, theres a real attraction that research-grade peptides have for consumers: they dont require a prescription

Helps confirm GH secretagogues are working and levels aren't excessive

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The Human Tripeptide GHK-Cu in Prevention of Oxidative Stress and Degenerative Conditions of Aging Oxidative Medicine and Cellular Longevity GHK-Cu levels decline from 200 ng/mL at age 20 to 80 ng/mL by age 60