Can a CT scan determine if someone has a positive or negative result for the coronavirus? Also, if the CT scan report doesn't show any infection, does that mean the person is definitely negative for COVID-19?

CT Scan Limitations

• A CT scan cannot definitively diagnose COVID-19.
• It may show lung changes suggestive of viral pneumonia, but these are not specific to COVID-19.

Diagnosis Recommendations

• The gold standard for COVID-19 diagnosis is a molecular test like RT-PCR.
• Rapid antigen tests are also used but are less sensitive.

Clinical Context

• A normal CT scan does not rule out COVID-19, especially in early or mild cases.
• If symptoms or exposure risk exist, testing and clinical evaluation are essential.

Summary

• CT scans can support but not confirm COVID-19 diagnosis.
• Negative CT findings do not exclude infection.
• Molecular testing is necessary for a definitive diagnosis.
• Clinical context and symptoms guide further management.