Objective To investigate the serum uric acid level and its distribution in children aged 3~6 years in urban Tianjin,and to explore the reference range of serum uric acid for healthy pre-school children. Methods 26 kindergartens involving 4 083 children aged 3~6 years were randomly selected from the urban Tianjin.Serum uric acid was tested using the peripheral blood from right leech-finger. Results 1)The average level of serum uric acid was(243.0±52.8)μmol/L.There were significant differences of serum uric a...