[Diagnostic value of serum Cystatin C in renal function impairments in children with viral encephalitis].

Objective: To study the value of serum Cystatin C (Cyst C) in the evaluation of glomerular filtration function in children with viral encephalitis.

Methods: Serum levels of Cyst C, urea nitrogen (BUN) and creatinine (Cr) were measured in 92 children with viral encephalitis and in 50 healthy children as a control group. According to glomerular filtration rate (GFR), the encephalitis group was subdivided into normal renal function, renal insufficiency in the compensatory or decompensatory stage, and renal failure /end-stage groups.