• Ramsha Ghazal Arshad and Kaleem Ullah Toori.
• Ramsha Ghazal Arshad, MBBS. Post Graduate Trainee Medicine, KRL Hospital, Islamabad, Pakistan.
• Pak J Med Sci. 2024 Oct 1; 40 (9): 198919931989-1993.

ObjectivesThis study aims to find if any significant correlation exists between C-reactive protein and Neutrophil to Lymphocyte Ratio as an indirect measure of inflammation.MethodsWe selected 983 patients with any inflammatory condition who presented to a tertiary care hospital and were admitted in medical wards or Intensive Care Units (ICUs) of KRL Hospital Islamabad from December 2021 to December 2022. The study was a cross sectional study and convenience sampling was done. The patients were categorized into five groups depending upon their pathophysiology. Kolmogorov Smirnov test was used to assess the normality of the data, and Spearman's coefficient was used to calculate the correlation between NLR and CRP.ResultsA total of 983 patients were included. Mean CRP and NLR levels were 89.9±3.2 and 7.06±0.24, respectively. There was a significant positive correlation between CRP-NLR in the infectious, non-infectious non-inflammatory, and malignancy groups (0.420, 0.381, 0.642, p <0.01), and inflammatory group (0.322, p <0.05), and no correlation with chronic diseases.ConclusionA significant correlation was shown to exist between CRP and NLR in patients with malignancies, non-infective non-inflammatory, inflammatory, and infective conditions and can therefore be used interchangeably to detect the presence of inflammation. Further exploration of these associations may contribute to a more nuanced understanding of the intricate relationships between different markers of inflammation and response to treatment.Copyright: © Pakistan Journal of Medical Sciences.

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