Description
Why It’s Done:
The CMV Viral Load Test is used to:
• Detect and quantify active CMV infection
• Monitor the effectiveness of antiviral treatment
• Track CMV reactivation in immunocompromised patients
• Guide treatment decisions, including when to start, adjust, or stop antiviral medications
• Assess the risk of CMV disease in transplant recipients or other at-risk groups
It is not typically used to diagnose past infections or determine immunity — for that, CMV IgG and IgM antibody tests are used.
Preparation:
• No special preparation or fasting is required for this test.
• A blood sample will be drawn from a vein in your arm.
• Inform your healthcare provider if:
o You’re currently taking any antiviral medications
o You’ve had recent infections, vaccinations, or transfusions
o You’re undergoing transplant evaluation or monitoring


