“…Detection and quantification of DCF is performed by HPLC-MS, GC-MS, or immunoassays. 9,10,26,42,43 There are many formats of immunoassays, for example ELISA, 1,3–10,26,43–45 CLEIA, 46 ULISA, 42 ELIMSA, 47 FLISA, 48 FPIA, 49 and LFIA. 50 For DCF, the enzyme-linked immunosorbent assay (ELISA) is generally used in the indirect competitive format.…”