- Determination of phosphonoformate (foscarnet) in calf and human serum by automated solid-phase extraction and high-performance liquid chromatography with amperometric detection. Ba, B.B., Corniot, A.G., Ducint, D., Breilh, D., Grellet, J., Saux, M.C. J. Chromatogr. B Biomed. Sci. Appl. (1999)