The role of dipsticks in the diagnosis of urinary tract infection.
Dipsticks containing indicators for the presence of leucocytes (nephur test) and bacteria (nitrate test) were performed on 1134 urine samples obtained from children attending a Urinary Tract Infection Clinic. These dipstick results were compared with the results of standard leucocyte counts and culture of the same urines. The nitrite test was disappointing in diagnosing infection as it was positive in only 81.4% of urines with positive cultures. However, if it was combined with a nephur test only 3.9% of infections were missed. Conversely a positive nitrite test indicated with 91.3% accuracy that the urine was infected. Combined negative nephur and nitrite tests were 98.6% accurate in excluding urinary tract infection.
Murphy
L C
LC
Keane
C T
CT
Rees
J P
JP
D005069:Evaluation Studies as Topic; D006801:Humans; D011934:Reagent Strips; D014552:Urinary Tract Infections / Q000175:diagnosis*
D011934:Reagent Strips