Biochemical, Serological and Immunological Tests for Diagnosis of Coronavirus Disease 2019 (COVID-19) Patients: A Comprehensive Systematic Review and Meta-analysis.

The results show lymphopenia, elevated ESR level, elevated CRP level, elevated serum amyloid-A, elevated TNFα, elevated procalcitonin level, elevated interleukin-6 level, reduced CD3, reduced CD4, elevated BNP, elevated LDH, reduced albumin, reduced pre-albumin, and elevated Ddimer levels as the most common findings at the time of admission.