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    Determination of Biotin Interference in Pediatric Obesity Related ELISA Research Kits Biotin Interference in Manual ELISA Kits
    (WILEY, 2025) Kurkcu Kahraman, Ezgi; Donma, Orkide; Donma, Mustafa Metin; Yilmaz, Ahsen; Guzel, Savas
    BackgroundAlthough high-dose biotin interference in automated immunoassays is now considered, there are very few studies showing biotin interference in manually operated research kits, especially with enzyme-linked immunosorbent assay (ELISA). The aims of our study were to determine the effects of biotin interference on various parameters, including leptin, leptin receptor (LEPR), ghrelin, acylated ghrelin, deacylated ghrelin, ghrelin receptor (GHSR), kisspeptin (KISS1), kisspeptin receptor (KISS1R), preptin, peroxisome proliferator activated receptor gamma (PPAR gamma), nod-like receptor pyrin domain-containing 3 (NLRP3) and interleukin-18 (IL-18), which contribute to energy homeostasis in healthy and obese children.MethodsSerum pools were prepared from healthy and obese individuals, and biotin concentrations in samples containing different amounts of biotin were measured via sandwich and competitive ELISA methods. In addition, possible biotin interactions were investigated by determining the concentrations of all the study parameters in serum pools containing different amounts of biotin.ResultsWe found that the biotin-competitive, ghrelin-competitive, KISS1-competitive, GHSR, leptin and LEPR ELISA kits were less affected by biotin interference and the results of these assay kits were more reliable. Unexpectedly, high levels were also measured in the biotin sandwich ELISA kit, indicating that biotin interference can also occur in manually operated assay kits.ConclusionsBiotin exhibited an interference effect even in well-functioning, qualified kits, and this negative effect was less common in competitive kits. Biotin interference was closely associated with the quality of the research kit, the parameters studied, and the presence of high biotin concentrations in the blood.