amm-Horsfall glycoprotein (THP)was purified from human urine by repeated salting outfractination and Sephadex G-100 Chromatography.Anti-THP antibodies were produced in rabbitsby intramuscular injection of refined THP mixed with Freund’s Complete adjuvant. Theanti-THP antibodies were labelled with biotin to establish an ABC-ELISA(Avidin-Biotin-peroxidase complex ELISA.)The detection limit of this method.was 2ng.Theaverage recovery was proved to be 97%. Coefficient of variation (CV)was 4.7%
Sera THPconcentration of 51 normal blood donors tested with this method was 226.94±145.90ng/ml.50patients with different renal diseases were investigated.