GPs overusing RF tests: study

GPs order too many tests for rheumatoid factor and should instead refer suspected rheumatoid arthritis patients based on clinical features alone, specialists say.

A UK study found just 4% of primary care patients who were sent for RF testing were ultimately diagnosed with rheumatoid arthritis and just 7% with inflammatory arthritis.

All confirmed cases had been initially thought to have the diseases based on clinical criteria, suggesting the