Objective To study the method of creating a model of chronic hyperuricemia in rats. Methods Forty female Wistar rats were evenly divided into control group and model group in random.The rats in model group were administrated with adenine 100 mg/(kg·d) by gavage and yeast-rich forage.Blood UA,CR and BUN were detected regularly.To improve the modeling method when serum uric acid levels started to decline.The rats were then administered with adenine,50 mg/(kg·d),by gavage and yeast-rich forage,and meanwhile,hy...