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01.04.2015 | original article | Ausgabe 7-8/2015

Wiener klinische Wochenschrift 7-8/2015

Does neutrophil-to-lymphocyte ratio predict active ulcerative colitis?

Wiener klinische Wochenschrift > Ausgabe 7-8/2015
MD Emrah Posul, MD Bulent Yilmaz, MD Gulali Aktas, MD Assoc. Prof. Mevlut Kurt



Inflammatory markers have been studied in ulcerative colitis (UC) for diagnosis, disease activity, and prediction of relapse. Blood neutrophil-to-lymphocyte (N/L) ratio has been used to determine outcomes of some malignancies and coronary artery disease. Blood N/L ratio is a simple sign of clinical inflammation. In this study, we examined N/L ratio in recurrent patients suffering from UC.


The aim of the present study was to analyze N/L ratios in serum samples of UC patients in remission and active phases. Patients’ age, extend of the disease, disease duration, disease activity, drug, and other medical history were all noted for patients. C-reactive protein, erythrocyte sedimentation rate, and complete blood count were determined for patients.


Forty-nine UC patients were admitted into the present study. The blood N/L ratios were significantly increased in active phase compared with inactive UC patients (p < 0.05). The cut-off value for N/L ratio for the detection of active UC patients was calculated as ≥ 2.3 using receiver operating characteristic analysis [sensitivity: 61.2 %, specificity: 66.7 %, AUC: 0.650 (0.540–0.760), p = 0.01].


Present study shows that in patients with UC, the blood N/L ratio is associated with active disease. N/L ratio may be used as an activity parameter in UC.

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