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Rheumatoid Arthritis Diagnostic Panel
Test CodeRADPNL
Quest Code
17669
CPT Codes
86200, 86431
Includes
Rheumatoid Factor
Cyclic Citrullinated Peptide (CCP) Antibody (IgG)
Cyclic Citrullinated Peptide (CCP) Antibody (IgG)
Preferred Specimen
2 mL serum
Minimum Volume
1 mL
Transport Container
Plastic screw-cap vial
Transport Temperature
Room temperature
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Plasma
Methodology
Immunoturbidimetry • Immunoassay (IA)
Setup Schedule
Set up: Mon-Fri a.m.; Report available: Next day
Reference Range
Rheumatoid Factor | <14 IU/mL |
CCP Antibody, IgG | |
Negative | <20 |
Weak Positive | 20-39 |
Moderate/Strong Positive | 40-59 |
Strong Positive | >59 |
Clinical Significance
The combination of RF and anti-CCP antibodies provide greater specificity for the diagnosis of Rheumatoid Arthritis (RA). CCP antibodies may be present earlier than RF and often indicate increased erosive disease in RA.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153
Last Updated: December 1, 2014