C-Peptid

C-Peptide, also known as Connecting Peptide, is a short peptide that is released into the bloodstream as a byproduct of insulin production. It is formed when proinsulin, a precursor of insulin, is cleaved into insulin and C-Peptide. Researchers found that C-Peptide serves as a marker of endogenous insulin secretion, reflecting pancreatic beta-cell function. Clinically, C-Peptide measurement is important in distinguishing between type 1 and type 2 diabetes, as well as in assessing residual beta-cell function in individuals with diabetes. It is particularly valuable in cases of autoimmune diabetes and adult-onset diabetes, where it helps guide treatment decisions and risk stratification. In terms of athletic performance and biohacking, C-Peptide may provide insights into insulin production and glucose metabolism, which are crucial for energy management and metabolic health. However, researchers observed that its utility in these contexts is less established compared to its role in diabetes management. Caveats include the variability in assay standardization, which can affect comparability of results across different laboratories. Additionally, factors such as fasting status, renal function, and time of day can influence C-Peptide levels, necessitating careful interpretation of results.