title: Diagnostic value of adenosine deaminase to differentiate exudates and transudates.
abstract: The differentiation of pleural effusions as exudates or transudates is the first step in the diagnosis of pleural effusions. The aim of this study was to evaluate the value of adenosine deaminase (ADA) concentration in the pleural effusions for differentiating exudates from transudates. Sixty indoor patients, admitted to our hospital, having pleural effusions and suffering from varying etiologies were included in this study. According to the final diagnosis, these 60 patients were divided into two groups: exudates (50) and transudates (10). The mean pleural ADA, serum ADA and pleural fluid/serum ADA ratio were significantly (P < 0.0001) higher in exudates as compared to transudates. Using a cut-off point of 22 IU/L, the sensitivity and specificity of pleural ADA in the diagnosis of exudates was computed to be 90% and 90% respectively. At a cut-off point 1.28, pleural fluid/serum ADA ratio was found to have sensitivity 84% and specificity 90%, respectively. From this study it is concluded that, ADA is a useful biochemical marker to suggest exudative effusions.
authors.affiliation: Department of Biochemistry, People's College of Medical Sciences and Research Centre, By-Pass Road, Bhanpur, Bhopal. drjadhavaa@yahoo.co.in
authors.forename: Ashish Anantrao
authors.initials: AA
authors.lastname: Jadhav
authors.forename: Jayashree Suhas
authors.initials: JS
authors.lastname: Bardapurkar
mesh_terms: D000243:Adenosine Deaminase / Q000097:blood*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005122:Exudates and Transudates; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010996:Pleural Effusion / Q000175:diagnosis* / Q000201:enzymology; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity
chemical_list: D000243:Adenosine Deaminase