Experiencing symptoms like fatigue, sore throat, or swollen lymph nodes? An Epstein-Barr Virus (EBV) Viral Capsid Antigen Test, IgM can help diagnose a recent EBV infection. This test detects IgM antibodies specific to the viral capsid antigen, indicating an ongoing or recent EBV infection. EBV is responsible for illnesses like infectious mononucleosis and is associated with various health issues. Timely medical evaluation is crucial for an accurate diagnosis and appropriate management, especially when symptoms are severe or persistent.