Routine blood tests and severity of COVID-19 infection (search done on 20 March 2020)

Added July 30, 2020

Citation: Zeng F, Li L, Zeng J, et al. Can we predict the severity of COVID-19 with a routine blood test? Polish archives of internal medicine. 2020 May 29;130(5):400-6.

What is this? Routine blood tests might provide information about the severity of COVID-19 for an infected patient.

In this rapid review, the authors searched for studies assessing the relationship between the results of routine blood tests and the severity of COVID-19 infection.They restricted their searches to articles published in English and Chinese and did the search on 20 March 2020. They identified 15 studies (3090 patients), all from China.

What was found: At the time of the review, the included studies noted that patients with severe COVID-19 infection more often had higher neutrophil levels, and neutrophil-lymphocyte ratio (NLR), and lower lymphocyte levels, than patients with less severe infection; but that these findings are uncertain.


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