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Anti-cyclic citrullinated peptide, CCP antibodies, anti-CCP
This blood test checks for an amino acid called citrulline. Citrulline is present when you have rheumatoid arthritis (RA).
RA attacks your joints, and citrulline is a by-product of joint damage. In response, your body often produces antibodies against citrulline. These antibodies are called anti-cyclic citrullinated peptide, or anti-CCP, antibodies.
You may have this test to find out whether you have RA. Even in the early stages of the disease, the CCP test can give health care providers a clear idea of how quickly your symptoms may progress and what kind of treatment you will need.
This test is also a good choice if other tests for RA don't have definite results.
Your doctor may order other tests for RA. The most common are joint X-rays or scans and blood tests to check your level of rheumatoid factor. But health care providers are beginning to use the anti-CCP test more often because it is so specific.
Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your health care provider.
In general, testing positive for anti-CCP antibodies is a good indication that you have rheumatoid arthritis.
The test requires a blood sample, which is drawn through a needle from a vein in your arm.
Taking a blood sample with a needle carries risks that include bleeding, infection, bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight stinging sensation or pain. Afterward, the site may be slightly sore.
Other factors aren't likely to affect your results.
You don't need to prepare for this test. Be sure your doctor knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illicit drugs you may use.
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