Rheumatoid Factor

General

Synonym/Acronym:

RF, RA.

Rationale

To primarily assist in diagnosing rheumatoid arthritis.

Patient Preparation

There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings

(Method: Immunoturbidimetric) Less than 14 international units/mL. Elevated values may be detected in healthy adults 60 yr and older. RF is not useful in monitoring the effectiveness of treatment.

Critical Findings and Potential Interventions

N/A

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