CD40LG and cytomegalovirus infection: Additionally, fetal IgM titers against hCMV can be measured, along with non-specific, non-viral laboratory parameters of hCMV infection, which include platelet count, hematocrit, hemoglobin concentration, alanine aminotransferase, aspartate aminotransferase, γ-glutamyltransferase, and bound bilirubin levels [52,53,54,55].