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Neutrophil Lymphocyte Ratio, Monocyte Lymphocyte Ratio, Platelet Lymphocyte Ratio in Covid-19 Patients
Insights
Routine blood tests can help predict COVID-19 severity. Key ratios like neutrophil-to-lymphocyte ratio (NLR), monocyte-lymphocyte ratio (MLR), and platelet-lymphocyte ratio (PLR) show significant diagnostic value for patient outcomes.
Area of Science:
- Hematology
- Infectious Diseases
- Critical Care Medicine
Background:
- COVID-19 is a highly contagious viral infection with significant pathogenicity.
- Understanding early hematological changes is crucial for diagnosing and managing COVID-19.
- Preliminary hematological findings at admission may offer diagnostic insights into disease severity.
Purpose of the Study:
- To evaluate the diagnostic value of hematological parameters in COVID-19 patients.
- To determine the relationship between hematological findings and disease severity.
- To assess the prognostic potential of routine blood tests in COVID-19.
Main Methods:
- Retrospective analysis of 169 confirmed COVID-19 patients (ward vs. ICU) and 67 controls.
- Comparison of admission hematological parameters including Neutrophil-to-Lymphocyte Ratio (NLR), Monocyte-Lymphocyte Ratio (MLR), Platelet-Lymphocyte Ratio (PLR), and MPV/PLT.
- Statistical analysis including ROC analysis to determine diagnostic significance.
Main Results:
- ICU patients exhibited significantly higher NLR, MLR, PLR, and MPV/PLT compared to ward patients (p < 0.001).
- Lower lymphocyte counts and hemoglobin levels were observed in ICU patients versus ward patients (p < 0.001).
- NLR, MLR, PLR, and MPV/PLT demonstrated statistically significant diagnostic values (p < 0.05).
Conclusions:
- Abnormal routine peripheral blood counts are common in COVID-19 patients.
- NLR, MLR, and PLR serve as reliable biomarkers for assessing COVID-19 severity and clinical classification.
- Accessible hemogram parameters at admission are important for predicting COVID-19 prognosis.
Background:
Covid-19 is a pandemic viral infection with high pathogenicity and contagiousness. Our aim is to evaluate the preliminary hematological findings analyzed during admission in order to determine the diagnostic value of hematological parameters in Covid-19 patients and to reveal their relationship with the severity of the disease.
Methods:
Our study includes a total of 169 patients, whose diagnosis was confirmed and 93 of whom were treated in the ward, 76 of whom were treated in the Intensive Care Unit (ICU), and 67 control patients. Neutrophil-to-lymphocyte ratio (NLR), monocyte-lymphocyte (MLR) ratio, platelet-lymphocyte ratio (PLR), mean platelet volume/platelet count ratio (MPV/PLT) data on admission were analyzed retrospectively and compared.
Results:
ICU patients had significantly higher values of NLR, MLR, PLR, and MPV/PLT (p < 0.001 for each) but had lower values of lymphocyte count and hemoglobin (p < 0.001 for each) compared to that of ward patients. According to the results of ROC analysis, the diagnostic values of NLR, MLR, PLR, and MPV/PLT parameters were statistically significant (p < 0.05).
Conclusions:
According to the results of our study, abnormal routine peripheral blood examination results were detected in Covid-19 patients. NLR, MLR, and PLR can be considered as independent, reliable biomarkers for assessing disease severity, hospitalization, and clinical classification in Covid-19. Therefore, it was concluded that fast, cost-effective, easily accessible admission hemogram parameters are reasonably important to predict the prognosis of Covid-19 patients.
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