A systematic review and meta‐analysis of abnormalities in hematological and biochemical markers among Bangladeshi COVID‐19 cases

BACKGROUND AND AIMS: Abnormalities in hematological and biochemical markers are assumed to be associated with the progression of COVID‐19 disease. This meta‐analysis was performed to assess the consequences of abnormalities of biomarkers (D‐dimers, C‐reactive protein [CRP], serum ferritin, lactate dehydrogenase [LDH], random blood sugar [RBS], absolute neutrophil count [ANC], neutrophil to lymphocyte ratio (NLR), serum creatinine, and hemoglobin) in the Bangladeshi COVID‐19 patients. METHODS: The data of biomarker levels in Bangladeshi COVID‐19 patients were gathered from five databases: PubMed, ScienceDirect, Web of Science, Google Scholar and Bangladesh Journals Online between January 2020 to March 2022. Review Manager 5.4 was used for the meta‐analysis, and Egger's test and Begg‐Mazumdar's rank correlation were used to investigate publication bias. RESULTS: This study included 1542 patients with 567 severe and 975 nonsevere statuses. Based on the accumulated data synthesis, there is a strong correlation between disease severity and different biomarkers, including D‐dimer, CRP, ferritin, LDH, RBS, NLR, and serum creatinine (MD = 1.16, p = 0.0004; MD = 22.97, p = 0.003; MD = 419.26, p < 0.00001; MD = 118.37, p = 0.004; MD = 1.96, p = 0.02; MD = 1.26, p = 0.02; and MD = 0.31, p = 0.008, respectively). A significantly decreased correlation was observed for hemoglobin levels in severe COVID‐19 patients (MD = −0.73, p = 0.10). CONCLUSION: The elevated biomarkers level was noticed in severe cases compared to nonsevere patients, revealing that D‐dimer, CRP, ferritin, LDH, RBS, NLR, and serum creatinine are significantly correlated to COVID‐19 severity. Only lower hemoglobin level was found to be associated with COVID‐19 severity.