C-peptide (C-peptide) ndi insulin (insulin) ndi mamolekyu awiri opangidwa ndi maselo a pancreatic islet panthawi yopanga insulin. Kusiyana kwa magwero: C-peptide ndi chinthu chopangidwa kuchokera ku kupanga insulin ndi maselo a pancreatic islet. Insulin ikapangidwa, C-peptide imapangidwa nthawi imodzi. Chifukwa chake, C-peptide imatha kupangidwa m'maselo a pancreatic islet okha ndipo sidzapangidwa ndi maselo kunja kwa ma islet. Insulin ndiye mahomoni akuluakulu opangidwa ndi maselo a pancreatic islet ndikutulutsidwa m'magazi, omwe amawongolera kuchuluka kwa shuga m'magazi ndikuthandizira kuyamwa ndi kugwiritsa ntchito shuga. Kusiyana kwa ntchito: Ntchito yayikulu ya C-peptide ndikusunga bwino pakati pa insulin ndi ma insulin receptors, komanso kutenga nawo mbali pakupanga ndi kutulutsa insulin. Mlingo wa C-peptide ukhoza kuwonetsa momwe maselo a pancreatic islet amagwirira ntchito ndipo umagwiritsidwa ntchito ngati chizindikiro chowunikira ntchito ya ma islet. Insulin ndiye mahomoni akuluakulu a metabolic, omwe amalimbikitsa kuyamwa ndi kugwiritsa ntchito shuga ndi maselo, kumachepetsa kuchuluka kwa shuga m'magazi, ndikuwongolera kagayidwe ka mafuta ndi mapuloteni. Kusiyana kwa kuchuluka kwa magazi: Miyezo ya magazi a C-peptide ndi yokhazikika kuposa kuchuluka kwa insulin chifukwa imachotsedwa pang'onopang'ono. Kuchuluka kwa insulin m'magazi kumakhudzidwa ndi zinthu zambiri, kuphatikizapo kudya chakudya m'mimba, ntchito ya maselo a islet, kukana insulini, ndi zina zotero. Mwachidule, C-peptide ndi chinthu chochokera ku insulin chomwe chimagwiritsidwa ntchito makamaka poyesa ntchito ya maselo a islet, pomwe insulin ndiye mahomoni akuluakulu omwe amagwiritsidwa ntchito powongolera magazi.