The diagnosis of EBV is usually made in 3 to 5 days. EBV belongs to the herpesvirus genus, which is a very common virus.EbV diagnosis requires routine blood tests, peripheral heterogeneous lymphocyte tests, EBV antibody and antigen tests, etc. Each hospital laboratory has a different speed, so it usually takes 3 to 5 days to produce the test results. Each hospital laboratory has a different speed of testing, so the time required is not the same, usually three to five days can be issued test results, but specific or consult the relevant hospital. In China, 95% of adults and 90% of children between the ages of three and five have been previously infected with EBV. Most of the population is a hidden infection, or a mild cold and cough symptom with a good prognosis. Some EBV infections progress to infectious mononucleosis, and a very small percentage develop complications, such as ruptured liver and spleen enlargement. Patients who are diagnosed should be treated promptly under a doctor’s supervision.