Journal of Family Medicine and Primary Care

ORIGINAL ARTICLE
Year
: 2015  |  Volume : 4  |  Issue : 2  |  Page : 265--268

Reliability of dipstick assay in predicting urinary tract infection


Anith Kumar Mambatta1, Jayalakshmi Jayarajan2, Vinitha L Rashme1, Sanchitha Harini1, Sujaya Menon1, Jayachandran Kuppusamy1 
1 Department of Medicine, PSG Institute of Medical Sciences and Research, Coimbatore, Tamil Nadu, India
2 Department of Microbiology, PSG Institute of Medical Sciences and Research, Coimbatore, Tamil Nadu, India

Correspondence Address:
Anith Kumar Mambatta
Department of Medicine, PSGIMSR, Coimbatore, Tamil Nadu- 641004
India

Aims: Urine dipstick analysis is a quick, cheap and a useful test in predicting Urinary Tract Infection (UTI) in hospitalized patients. Our aim is to evaluate the reliability (sensitivity) of urine dipstick analysis against urine culture in the diagnosis of UTI. Materials and Methods: Patients admitted to our hospital suspected of having UTI, with positive urine cultures were included in this study from a 2-year period (January 2011 to December 2012). Dipstick urinalysis was done using multistix 10 SG (Siemens) and clinitek advantus analyzer. The sensitivity of dipstick nitrites, leukocyte esterase and blood in these culture-positive UTI patients was calculated retrospectively. Results: Urine dipstick analysis of 635 urine culture-positive patients was studied. The sensitivity of nitrite alone and leukocyte esterase alone were 23.31% and 48.5%, respectively. The sensitivity of blood alone in positive urine culture was 63.94%, which was the highest sensitivity for a single screening test. The presence of leukocyte esterase and/or blood increased the sensitivity to 72.28%. The sensitivity was found to be the highest when nitrite, leukocyte and blood were considered together. Conclusions: Nitrite test and leukocyte esterase test when used individually is not reliable to rule out UTI. Hence, symptomatic UTI patients with negative dipstick assay should be subjected to urine culture for a proper management.


How to cite this article:
Mambatta AK, Jayarajan J, Rashme VL, Harini S, Menon S, Kuppusamy J. Reliability of dipstick assay in predicting urinary tract infection.J Family Med Prim Care 2015;4:265-268


How to cite this URL:
Mambatta AK, Jayarajan J, Rashme VL, Harini S, Menon S, Kuppusamy J. Reliability of dipstick assay in predicting urinary tract infection. J Family Med Prim Care [serial online] 2015 [cited 2020 Sep 30 ];4:265-268
Available from: http://www.jfmpc.com/article.asp?issn=2249-4863;year=2015;volume=4;issue=2;spage=265;epage=268;aulast=Mambatta;type=0