Conclusion
In summary, while SARS-CoV-2 Real-Time RT-PCR is considered as a gold
standard method 46, it is accompanied by
false-negative results and less than 100% sensitivity47. Even though the proper period for sampling is the
first week after symptom onset, many cases are asymptomatic carriers
with pulmonary involvement. COVID-19 pneumonia displays the lung
involvements and lesions even in asymptomatic patients within 1-3 weeks.
Besides, blood parameters are easily accessible and commonly used
everywhere. Relating the valuation of CT scan features with clinical and
laboratory outcomes possibly assist the timely diagnosis of COVID-19
pneumonia. It was clarified in our study that lymphopenia <
20% and lung CT involvement > 50% were intensely related
todisease severity, mortality, and prolonged hospitalization.