“…22 Several immunoassays for detection of FF have been recently reported. 23,24 However, there were only two reported methods for analysis of both FF and TAP in one immunoassay. 25,26 We have previously published two articles for determination of FF and its metabolite FFA in animal meat products, 27,28 in which the polyclonal antibodies can bind with FF and FFA with high cross-reactivity (CR), only with a CR of 4.0% for TAP, and thus not suitable for determination of TAP in animal meat products.…”