As the organism is afflicted by COVID-19 as a whole, recognition of the
disease can sometimes pose difficulties for healthcare workers. Laboratory and
radiological workup are necessary for expedient diagnosis in most cases. Although
considered as a gold standard, the need for certified laboratories, expensive equipment,
and trained staff are drawbacks of RT-PCR tests to be applied to large numbers of
people as screening tests . Chest radiography is recommended as an initial test for any
patient with suspicion of the disease, while chest tomography is more sensitive to
demonstrate specific lesions and the extent of the disease inflicting lungs.
Keywords: CD4/CD8 ratio, Complete blood count, COVID-19, CRP,
Neutrophil/lymphocyte ratio, Outbreak, Pandemic, RT-PCR.
