CPT® Code 84181

The CPT® Code 84181 refers to the Western Blot procedure, which is a sophisticated analytical technique utilized for the detection of specific proteins within body tissues or fluids. This method, also known as protein immunoblotting, is particularly significant in the field of laboratory diagnostics. The Western Blot technique involves the separation of proteins through a process called gel electrophoresis, where proteins are sorted based on their size and charge. Once separated, these proteins are transferred onto a membrane, typically made of nitrocellulose or polyvinylidene fluoride (PVDF). This membrane serves as a solid support for the proteins, allowing for further analysis. The next critical step in the Western Blot procedure is the application of target-specific antibodies that bind to the proteins of interest. These antibodies are designed to recognize and attach to particular proteins, facilitating their identification. The interpretation of the results, along with a comprehensive report, is included in the scope of this code. It is important to note that CPT® Code 84181 is applicable to both blood and other body fluids, making it a versatile tool in clinical diagnostics. Additionally, there is a related code, CPT® Code 84182, which involves the use of immunological probes for protein identification and is reported separately for each probe used. This distinction highlights the specificity and complexity of protein analysis in laboratory settings.