Rheumatoid Factor (Qualitative) (SR0085)

Description

Rheumatoid Factor (Qualitative) is a screening blood test used to detect the presence of rheumatoid factor (RF) antibodies in serum. It is commonly used in the evaluation of rheumatoid arthritis (RA), autoimmune joint disorders, chronic inflammatory diseases, connective tissue disorders, and unexplained joint pain or stiffness. RF is an autoantibody directed against the Fc portion of IgG and is found in many patients with rheumatoid arthritis, although it is not specific and may also be present in other autoimmune diseases, chronic infections, liver disease, and in some healthy older adults. A qualitative RF test usually reports results as Positive / Negative (Reactive / Non-Reactive) and is often performed by latex agglutination or rapid immunoassay methods. It is useful as an initial screening tool and may be followed by RF quantitative testing and Anti-CCP antibodies for improved diagnostic accuracy in suspected rheumatoid arthritis. Reference labs commonly use RF testing to support the diagnosis and prognosis of rheumatoid arthritis.

Report Time

Fasting

Not Required

Reporting Time

Same Day

Gender

Male/Female

Age Group

All Age Group

Pre-Test Instructions:

No fasting required
Collect serum in plain red-top tube or SST (gel barrier tube)
Avoid hemolyzed, lipemic, contaminated, or clotted samples because these may cause false results or rejection; Labcorp specifically notes hemolysis/lipemia can cause issues and markedly lipemic or contaminated specimens may yield false positives.
RF is not specific for rheumatoid arthritis and may be positive in other autoimmune diseases, chronic infections, liver disease, and even healthy older adults.
For better RA evaluation, consider combining with Anti-CCP (CCP antibodies), which major reference labs note provides additional clinical value in RA diagnosis.
If qualitative RF is positive, some laboratories may recommend RF Quantitative / RF Titer for further evaluation
Always interpret with clinical symptoms, joint findings, ESR/CRP, and physician assessment

Parameters Covered

रु 400

✔ Home collection available ✔ No hidden charges

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Rheumatoid Factor (Qualitative) (SR0085)

Description

Report Time

Pre-Test Instructions:

Parameters Covered

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