Abstract: Objective To study the clinical function of C-reaction in the diagnosis of active-tuberculosis.Methods 120 cases with active-tuberculosis in our hospital (from Mar.2002 to jun.2002) were divided into infection group and non-infection group,bacteriological positive group and bacteriological negative group .The control group included 20 cases with non -active tuberculosis.The Results of C-reaction protein (CRP) and erythrocyte sedimentation rate (ESR) in all groups were detected and compared.Results (1) The CRP and ESR in infection group were all higher than the non-infection group significantly(P<0.01) (2) The CRP of active-tuberculosis was higher than the control group significantly (p<0.01),while there was no significant difference of ESR in the two groups (P>0.05). (3)The CRP of the non-infection group and bacteriological negative was higher than the control group significantly (P<0.05),while there was no significant difference of ESR in the two groups(P>0.05). (4) The CRP and ESR in bacteriological-positive group were all higher than the bacteriological-negative ,but there was no significant difference in two groups.Conclusion The CRP was more positive and more significant than ESR in the diagnosis of active-tuberculosis.

Key words: C-reaction protein, Erythrocyte sedimentation rate, Tuberculosis