CRP and COVID-19: According to lab findings, affected patients demonstrate high D-dimer and increased C-reactive protein levels. In younger patients with COVID-19 pneumonia, particularly patients who are less than 30 years of age and do not have any comorbidity, some individuals with positive RT-PCR for COVID-19 might also disclose the absence of lung findings on high-resolution CT chest in the presence of disease if findings are present; however, the progression of the disease is less severe with moderate-to-low initial chest CT severity scores.