Abstract: Objective To investigate the normal reference range of urinary formed elements with UF-100 in Beijing Area.Methods The same methods were used to count the red blood cells(RBC), white blood cells(WBC), epithelic cells(EC) and casts of urine from 6 587 healthy people(3 243 males and 3 344 females) aged 1～92 years in Beijing. The examinations were completed within the same period of two hours under strict in laboratory quality control.Results The levels of RBC(expect for the group of 1～12 years)、 WBC and EC showed significant differences between males and females(P<0.05).There was no significant difference in WBC among the groups over 13 years(P>0.05), as compared with the groups aged 1～12 years in males. There was no significant difference in WBC among the groups of over 13 years(P>0.05)in females. There was no significant difference in RBC among groups aged 1～12 and the groups aged >19 years(P>0.05) in males, which were lower than those in groups aged 13～19 years. In females, The levels of RBC were not significantly different among the groups aged >13 years(P>0.05) which were higher than those in the groups aged 1～12(P<0.05). There were no significant differences in EC in all groups(P>0.05)in males, In females, EC did not show significant differences among the groups of 13 ～55 years(P>0.05), but there were significant differences among the groups aged 1～12 years and >56 years(P<0.05). In terms of casts, there were no significant differences among the different age and sex groups(P>0.05).Conclusion There were differences in urinary formed elements among groups of different sexes and ages(expect for cast).

Key words: reference values, urinary formed elements, UF-100, urine analyzer