CPT® Code 87285

1. Indications

The test coded as CPT® 87285 is indicated for the detection of Treponema pallidum in various clinical scenarios, particularly when there is a suspicion of syphilis. The following conditions warrant the performance of this test:

• Primary Syphilis The test is performed when a patient presents with a chancre, which is a sore that appears at the site of infection, indicating the primary stage of syphilis.
• Congenital Syphilis In cases where there is concern about congenital syphilis, tissue from the umbilical cord may be tested to determine if the infection has been transmitted from the mother to the fetus.

2. Procedure

The procedure for performing the test under CPT® 87285 involves several critical steps to ensure accurate detection of the T. pallidum antigen. The following outlines the procedural steps:

• Specimen Collection A specimen is obtained by scraping the suspicious lesion, typically a chancre, to collect cells or tissue that may contain the T. pallidum antigen.
• Reagent Application A reagent specific for T. pallidum is applied to the collected specimen. This reagent contains antibodies that will bind to the T. pallidum antigen if present.
• Incubation The specimen is then incubated for a period of 15 to 30 minutes at body temperature in a humid environment. This incubation period allows sufficient time for the antigen-antibody reaction to occur.
• Washing After incubation, the specimen is washed to remove any unbound conjugate, ensuring that only the bound antigen-antibody complexes remain.
• Drying and Mounting The specimen is then dried and mounted on a slide, preparing it for microscopic examination.
• Microscopic Examination A fluorescence microscope, equipped with the appropriate fluorescent light source and barrier filters, is used to examine the specimen. The presence of antigen-antibody binding is indicated by bright green or orange-yellow fluorescence, which confirms a positive test result.

3. Post-Procedure

Post-procedure care for patients undergoing the test coded as CPT® 87285 typically involves no specific requirements, as the test is minimally invasive and does not necessitate recovery time. However, it is essential for healthcare providers to communicate the results to the patient promptly. If the test result is positive, further evaluation and treatment for syphilis should be initiated, including counseling on the implications of the diagnosis and potential treatment options. Additionally, if congenital syphilis is suspected, appropriate follow-up care for the infant should be arranged to address any potential health issues arising from the infection.