Skip to the content

CMV Antiviral Testing for Letermovir Resistance Now Available

Viracor offers the first commercially available letermovir genotypic sequencing tests to help healthcare professionals make informed treatment decisions.

Human Cytomegalovirus (CMV) infections are a major cause of morbidity and mortality among immunocompromised patients. When healthcare providers suspect treatment failure due to antiviral resistance, proper patient management requires CMV resistance analysis — laboratory testing should be used for confirmation, as treatment modification based solely on clinical suspicion may result in added toxicity and increased risks for the patient.

Genotypic sequencing to identify CMV resistance offers a fast turnaround time, a broad range of antiviral resistance information, and information concerning new drugs as they become available— all data you need to help determine if it's time to adjust treatment.

At Viracor, our Mutation Surveillance Program uses nucleic acid sequence databases and journal research to verify new genetic polymorphisms. This program aids in rapid identification of new drugs available for use, like letermovir, which allows us to update our genotypic resistance sequencing assays to include reporting for the newest drugs available.

CMV Genotype Sequencing

•  2-4 day turnaround time

•  A broad range of antiviral resistance information

•  The ability to provide information concerning new drugs as they become available

Viracor gives you more options for CMV antiviral testing

Test Name Test Code CPT Code UL Gene

CMV Resistance: Letermovir, Ganciclovir, Foscarnet, Cidofovir


87910 x 3

54, 56, 97

Terminase, Polymerase, Phosphotransferase

CMV Resistance: Ganciclovir, Foscarnet, Cidofovir



54, 97

Polymerase, Phosphotransferase

CMV Resistance: Letermovir





We Know CMV.

Learn how we can help your hospital or lab streamline CMV testing for your critical patients, with multiple specimen types accepted and faster turnaround times.

CAP Accredited. CLIA Licensed. NY State Certified.


Connect with us