Cytomegalovirus IgG antibody 74IU/ml is generally a high value, but the specific reference index of the testing organization shall prevail. Cytomegalovirus belongs to the viral body commonly found in nature, which can lead to opportunistic infections. Indicators used for detecting cytomegalovirus infection mainly include IgG antibody and IgM antibody, of which the former can rise slowly during the period of disease infection or even be carried for life. There is no standardized normal range for cytomegalovirus IgG antibody in the clinic. Due to the different testing reagents and methods of different testing institutions, the normal reference value may vary, but the result of 74IU/ml is generally on the high side, which suggests that the tested person has been infected with cytomegalovirus, but it is not possible to determine the duration of the infection. If the cytomegalovirus IgG antibody is abnormal, you should go to a regular medical institution as soon as possible to clarify whether there is cytomegalovirus infection, and receive anti-infective treatment if necessary, so as not to delay the condition.