Positive Rheumatoid Factor Causes | Medical Algorithm

Are you evaluating a patient?

Yes

Is a serum assay for rheumatoid factor positive?

Yes

Does the patient have findings for?

• Rheumatoid Arthritis (RA)?

Yes

• Sjogren's syndrome?

Yes

• scleroderma?

Yes

• dermatomyositis?

Yes

• systemic lupus erythematosus?

Yes

• a vasculitis?

Yes

• antisynthetase syndrome?

Yes

• cryoglobulinemia?

Yes

• mixed connective tissue disease (MCTD)?

Yes

• polyarteritis nodasa (PAN)?

Yes

• bacterial endocarditis?

Yes

• tuberculosis?

Yes

• leprosy?

Yes

• osteomyelitis?

Yes

• syphilis?

Yes

• infectious mononucleosis?

Yes

• chronic viral hepatitis?

Yes

• another chronic infections?

Yes

• a B-cell malignancy?

Yes

Evaluation

Results

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Monitoring

Specialty

Objective

ICD-10

Conditions Associated with Positive Assay for Rheumatoid Factor (RF)

Purpose: To evaluate the results of rheumatoid factor (RF) testing.