“…This is a sensitive and accurate method, with good stability to light/oxygen and with high reproducibility (Gay & Gebicki, ; Mehta, Darji, & Aparnathi, ; Orefice et al., ; Yu, Wang, Zhou, Zhao, & Qiu, ). The FOX method can be employed for determining H 2 O 2 (Nourooz‐Zadeh, ; Sturza et al., ; Yu et al., ), lipid (Ceylan et al., ; Gay & Gebicki, ; Nourooz‐Zadeh, ; Venturini, Simao, & Dichi, ), and protein (Gay & Gebicki, ) hydroperoxides in a wide range of biological samples, from serum (Takci et al., ) and lipoproteins (Erel, ) to cerebrospinal fluid, urine (Erel, ), and tissue homogenates (de Andrade et al., ).…”