CPT® Code 87468

The CPT® Code 87468 refers to a laboratory test specifically designed for the detection of the infectious agent Anaplasma phagocytophilum through nucleic acid analysis, which can involve either DNA or RNA. Anaplasma phagocytophilum is a gram-negative bacterium that is transmitted to humans primarily through tick bites, leading to a condition known as human granulocytic anaplasmosis. This illness is characterized by symptoms such as fever, chills, malaise, muscle aches, and headache. The detection of Anaplasma phagocytophilum is achieved using advanced molecular techniques, particularly polymerase chain reaction (PCR) methods. These methods amplify the nucleic acid present in the sample, allowing for the identification of the pathogen even in small quantities. The most commonly utilized techniques include real-time polymerase chain reaction (qPCR) and reverse transcription polymerase chain reaction (RT-PCR) for RNA detection. In the case of RNA, the sample is first converted into complementary DNA (cDNA) using reverse transcriptase. The subsequent steps involve the amplification of the DNA target sequence, which is facilitated by the use of specific primers, polymerase enzymes, and fluorescent dyes or probes. This amplification process is repeated multiple times, resulting in millions of copies of the target DNA, which can then be quantified. The use of fluorescent or chemiluminescent labels in real-time PCR allows for the simultaneous detection of the amplified sequences, providing valuable information regarding the presence and quantity of the infectious agent in the patient's blood sample.