CPT® Code 86317

CPT® Code 86317 refers to an immunoassay procedure specifically designed for the quantitative measurement of antibodies against infectious agents. This code is utilized when a blood test is conducted to assess the levels of antibodies present in the patient's serum, which can indicate exposure to various infectious agents. The term "quantitative" signifies that the test provides a numerical value representing the concentration of antibodies, allowing healthcare providers to evaluate the immune response to specific pathogens. Common infectious agents tested under this code include Toxoplasma gondii, tetanus, rubella, diphtheria, Haemophilus influenzae type B, Streptococcus pneumoniae (14 serotypes), and hepatitis B surface antibodies. The testing is often performed using advanced techniques such as quantitative multi-analyte fluorescent detection, which enhances the accuracy and reliability of the results. It is important to note that this code is distinct from CPT® Code 86318, which is used for qualitative or semiquantitative immunoassays that identify infectious agent antibodies through simpler methods, such as dipstick or reagent strip methodologies, typically yielding results within a short timeframe of 5-10 minutes.