ACPA/CP4-1

The ACPA/CP4-1 test used to detect anti-citrullinated protein antibodies (ACPA), which are associated with rheumatoid arthritis (RA). This test specifically looks for antibodies that target citrullinated proteins, a process that is common in RA. A positive result indicates the presence of ACPA, suggesting the likelihood of rheumatoid arthritis or an increased risk of developing it. A negative result means these antibodies are not found, making RA less likely, but additional testing may be needed for confirmation. This test helps doctors in diagnosing rheumatoid arthritis and monitoring treatment effectiveness.