Platelet-to-lymphocyte ratio as a prognostic biomarker for COVID-19 severity: a single center retrospective data analysis and systematic review with meta-analysis of 187 studies

Abstract

This article is available in open access under Creative Common Attribution-Non-Commercial-No Derivatives 4.0 International (CC BY-NC-ND 4.0) license, allowing to download articles and share them with others as long as they credit the authors and the publisher, but without permission to change them in any way or use them commercially.

Sex- and gender-specific differences in the inflammatory response to COVID-19: the role of the neutrophil-to-lymphocyte ratio

“…The neutrophil-to-lymphocyte ratio (NLR) is a biomarker obtained by dividing the count of neutrophils by the count of lymphocytes, both of which are types of white blood cells measured through a routine complete blood count (CBC) test [1,2]. This ratio, just like the platelet-to-lymphocyte ratio and the lymphocyte-to-monocyte ratio, has gained attention as a potential prognostic and diagnostic tool in various medical conditions, including infections, inflammatory diseases, and cancer [3][4][5][6]. It reflects the balance between the innate (neutrophils) and adaptive (lymphocytes) immune responses [7].…”