ABSTRACT
OBJECTIVE To evaluate the detect method of neopterin(Npt) by enzyme-linked immunosorbent assay(ELISA) and discuss the application of Npt in the viral encephalitis.METHODS The Npt was detected by ELISA.The methodology was investigated by sensitivity,precision,rate of recovery,interference and reference value.The npt was detected by ELISA assay in peripheral blood of 50 healthy people,30 cases of cerebrospinal fluid in children with viral encephalitis and 12 cases of cerebrospinal fluid in the control group.RESULTS In this method,within-run CVs were 4.94% and 5.55%;between-run CVs were 5.99% and 6.57%.The sensitivity was 1.08 nmol/L;the rate of recovery was 95.8-107.8%.Various indexes of the methodology coincided with the requirements of clinical laboratory.The reference value of serum Npt was 0-7.84 nmol/L.The Npt of cerebrospinal fluid was(34.09 ? 36.34) nmol/L in the viral encephalitis group,and(4.55 ? 2.89)nmol/L in the control group,and the Npt of cerebrospinal fluid in patient was significantly higher than that in control group(P