This product has not been evaluated for total flavonoid assays. Validation for this application will be the responsibility of the end user. Published literature suggests it may be suitable for this purpose. Please see the citation below for further information on this type of an application.
Yagi, S.; Nilofar; Zengin, G.; Yildiztugay, E.; Caprioli, G.; Piatti, D.; Menghini, L.; Ferrante, C.; Di Simone, S.C.; Chiavaroli, A.; et al. Exploring for HPLC-MS/MS Profiles and Biological Activities of Different Extracts from Allium lycaonicum Siehe ex Hayek from Turkey Flora. Foods 2023, 12, 4507. https://doi.org/10.3390/foods12244507