{"id":"cmv-igm","name":"Cytomegalovirus (CMV) IgM","shortName":"CMV IgM","aliases":["CMV IgM","CMV Ab IgM","Cytomegalovirus IgM","Cytomegalovirus Antibody, IgM","Cytomegalovirus (CMV) Antibodies, IgM","Cytomegalovirus (CMV) Antibodies, Qualitative, IgM","Cytomegalovirus Ab, IgM","CMV Antibody, IgM","CMV Ab, IgM, S","Anti-CMV IgM","Citomegalovirus IgM"],"abbreviations":["CMV IgM","CMV-IgM","CMV Ab IgM"],"loinc":[{"code":"5126-8","primary":true},{"code":"7853-5","primary":false},{"code":"30325-5","primary":false},{"code":"24119-0","primary":false}],"specimen":"serum","units":[],"referenceRanges":[],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Looks for IgM antibodies that often appear early in a new CMV infection, but can also stay positive for months or come back falsely positive.","url":"https://bloodtesttracker.com/markers/cmv-igm","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}