Cyclic Citrullinated Peptide Antibody (CCP)
Code:
CCP
Sample Type:
2mL Serum (Gel 5mL Yellow tube or 6mL Red tube )
Ref Ranges/Units:
0 – 7 U/mL Negative. Reference range established by manufacturer and in house verification.
Turnaround:
3 Days
Frequency of Analysis: Daily
Special Precautions/Comments:
Method: Fluorescence enzyme immunoassay (FEIA). Second generation CCP. Calibration: Traceable to the International Reference Preparation (IRP) 67/86 of Human Serum Immunoglobulins A, G and M. EQA Scheme: UK NEQAS scheme for General Autoimmunity. IQC: Commercial preparation
Interferences: None known
Additional Information:
Indication: Rheumatoid Arthritis.
Background: Rheumatoid arthritis (RA) is the most common form of inflammatory joint disease, but its diagnosis remains principally a clinical one. The major challenge lies in differentiating RA from the many other forms of arthritis that share several presenting symptoms but vary widely both in outcomes and therapeutic options. With a growing body of evidence indicating that joint destruction and functional decline in RA are improved by early, aggressive therapeutic intervention, the need for an unequivocal early diagnosis has become critical [3]. NICE guidance for the management of rheumatoid athritis (RA) in adults recommends that the initial investigation carried out should be rheumatoid factor (RF). If RF is negative and it is still suspected that a patient has RA, a referral to a specialist should be made who can utilise Cyclic citrullinated peptide antibodies (CCP) as part of the clinical assessment [1]. CCP antibodies have been shown to be highly specific for RA and appear early in the disease process when diagnosis is most difficult and intervention most effective. CCP antibody measurement is of value in confirming the diagnosis of RA in patients with atypical presentation, excluding a diagnosis of RA in patients where the RF is positive but the clinical features are equivocal and also as an indicator of early RA [2,3]
References:Aletaha D, et al. 2010 Rheumatoid Arthritis classification criteria: An American College of Rheumatology/European League Against Rheumatism Collaborative Initiative. Arthritis and Rheumatism. 2010. 62(9):2569-2581. NICE clinical guideline 79. Rheumatoid arthritis: The management of rheumatoid arthritis in adults. 2009. [Ref 1] PRU handbook of autoimmunity. 4th Edition. 2007. [Ref 2] Pruijn G, et al. Anti-CCP detection facilitates early diagnosis and prognosis of rheumatoid arthritis. Cur Rhem Rev. 2005. 1:1-7. [Ref 3] Mimori T. Clinical significance of CCP antibodies in rheumatoid arthritis. Internal Med. 44(11):1122-1126.
Telephone Gateshead Lab: 0191.4456499 Option 4, Option 1
See Also: Rheumatoid factor