REAGENTS AND METHODS FOR THE DETECTION OF METHOTREXATE

摘要

A murine monoclonal IgG antibody is provided which is useful in the detection of methotrexate in body fluids. This monoclonal antibody, designated 4-351-178, may be employed in an assay for methotrexate, preferably a fluorescence polarization immunoassay (FPIA) of urine. Monoclonal antibody 4-351-178 is characterized by having no detectable cross-reactivity with 7-hydroxymethotrexate. Also disclosed is a hybridoma cell line, ATCC HB 11467, which produces the monoclonal antibody of the invention.