Rheumatoid factor (RA factor)

Why it is done

Joint pain and swelling.

Preparation

No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Supports rheumatoid arthritis with symptoms; also positive in other conditions. Low or negative may mean: Does not rule out rheumatoid arthritis. General information, not a diagnosis. Results must be interpreted by a qualified health worker.

What it measures

An antibody found in many people with rheumatoid arthritis.

Sample type

Blood

If the result is high

Supports rheumatoid arthritis with symptoms; also positive in other conditions.

If the result is low

Does not rule out rheumatoid arthritis.

यह कहाँ कराएँ

सामान्य प्रश्न

What does the Rheumatoid factor (RA factor) measure?
An antibody found in many people with rheumatoid arthritis.

Why is the Rheumatoid factor (RA factor) done?
Joint pain and swelling.

Do I need to fast for the Rheumatoid factor (RA factor)?
No fasting needed.

What does a high or positive Rheumatoid factor (RA factor) mean?
Supports rheumatoid arthritis with symptoms; also positive in other conditions.

What does a low or negative Rheumatoid factor (RA factor) mean?
Does not rule out rheumatoid arthritis.

What is the normal range for the Rheumatoid factor (RA factor)?
Laboratory-specific; see the reference range on your report.

Rheumatoid factor (RA factor) क्यों किया जाता है?
Joint pain and swelling.

Rheumatoid factor (RA factor) के लिए तैयारी/उपवास चाहिए?
No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Supports rheumatoid arthritis with symptoms; also positive in other conditions. Low or negative may mean: Does not rule out rheumatoid arthritis. General information, not a diagnosis. Results must be interpreted by a qualified health worker.