The AIIMS chief on Monday warned against rushing for CT scan in cases of mild COVID-19, saying it has side effects and can end up doing more harm than good. Stressing that there is no need for doing CT scans in mild COVID cases, AIIMS Director Dr Randeep Guleria at a press conference said that many people are opting for the test the moment they find out they are positive for COVID-19 and added that misuse of CT scans and biomarkers may cause damage. One CT scan is equivalent to 300 to 400 chest x-rays. According to data, repeated CT scans in younger age groups increase the risk of cancer in later life. Exposing yourself to radiation again and again may cause damage. So, there is no point in doing CT scan in mild COVID-19 if the oxygen saturation is normal, Guleria said.