Update Type: Test Code Change
Test Updated: 03/16/2022
Test Overview
Test Methodology

Polymerase Chain Reaction (PCR) followed by gene sequencing.

Test Usage

Mutations in specific codons of the CMV UL97 gene are associated with resistance to ganciclovir while mutations in specific codons of the CMV UL54 gene are associated with resistance to maribavir, ganciclovir, foscarnet and/or cidofovir. Mutations can consist of changes in codons encoding the amino acids as well as deletions of nucleotides.

Reference Range *

Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Friday
Analytic Time

3 days

Soft Order Code
MiChart Code
CMV AVR, Plasma
  • Cytomegalovirus Genotype
  • CMV AVR, Plasma
  • Ganciclovir UL97 Resistance
  • CMV Antiviral Resistance
  • Ganciclovir UL54 Resistance
  • Foscarnet UL54 Resistance
  • Cidofovir UL54 Resistance
Reference Laboratory
Viracor Eurofins 33126
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in a lavender top tube. Centrifuge, aliquot plasma into a plastic vial or send intact whole blood specimen. Store and transport specimens at room temperature.

Normal Volume
5 mL EDTA plasma
Minimum Volume
4 mL EDTA plasma
Additional Information

Test sent to Viracor Eurofins.

CPT Code
87910 x2
Fee Code
AA382 x2