CPT® Code 87497

The CPT® Code 87497 refers to a laboratory test specifically designed for the detection and quantification of the infectious agent cytomegalovirus (CMV) through nucleic acid analysis, which can involve either DNA or RNA. Cytomegalovirus is a member of the herpesvirus family and is known for its ability to be transmitted from person to person via various infected body fluids, including blood, saliva, urine, semen, and breast milk. While CMV infection is prevalent in the general population, it typically manifests as a disease resembling mononucleosis primarily in individuals who are immunocompromised. In neonates, congenital or perinatal CMV infection can lead to severe health issues if symptoms are present at birth, or it may result in long-term complications such as hearing loss or vision impairment that may not become apparent until later in life. Furthermore, pregnant women who contract CMV have the potential to transmit the virus to their fetus, which can have serious implications for the infant's health. The testing process involves a direct probe test, identified by CPT® Code 87495, which detects the unique nucleic acid sequence of CMV if it exists in the sample. This is achieved by using a probe that is labeled with fluorescent or chemiluminescent markers. The sample undergoes treatment to release nucleic acids from the target organism, allowing the labeled probe to specifically bind to the matching target sequence, forming a stable hybrid. Ribosomal RNA is often the focus of these tests due to its abundance in microorganisms, as opposed to the limited copies found in genomic DNA. The amplified probe technique, denoted by CPT® Code 87496, enhances the sensitivity of the assay by exponentially multiplying the target sequence of CMV DNA or RNA into millions of copies. The most prevalent amplification methods include polymerase chain reaction (PCR) and reverse transcriptase polymerase chain reaction (RT-PCR). Finally, the nucleic acid detection with quantification, represented by CPT® Code 87497, provides a measurement of the quantity of microorganisms present in the sample, often utilizing quantitative or real-time PCR to amplify the isolated nucleic acid segment and generate a detailed report documenting the absolute or relative amounts of the known nucleic acid sequence at each stage of the testing process.